linux-block.git
15 months agoDocumentation: i2c: correct spelling
Randy Dunlap [Sat, 28 Jan 2023 19:21:09 +0000 (11:21 -0800)]
Documentation: i2c: correct spelling

Correct spelling problems for Documentation/i2c/ as reported
by codespell.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agodt-bindings: i2c: i2c-st: convert to DT schema
Alain Volmat [Mon, 13 Feb 2023 19:16:06 +0000 (20:16 +0100)]
dt-bindings: i2c: i2c-st: convert to DT schema

Convert i2c-st.txt into st,sti-i2c.yaml for the i2c-st driver.

Signed-off-by: Alain Volmat <avolmat@me.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: i801: add helper i801_set_hstadd()
Heiner Kallweit [Mon, 19 Dec 2022 18:16:08 +0000 (19:16 +0100)]
i2c: i801: add helper i801_set_hstadd()

Factor out setting SMBHSTADD to a helper. The current code makes the
assumption that constant I2C_SMBUS_READ has bit 0 set, that's not ideal.
Therefore let the new helper explicitly check for I2C_SMBUS_READ.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: i801: make FEATURE_BLOCK_PROC dependent on FEATURE_BLOCK_BUFFER
Heiner Kallweit [Mon, 19 Dec 2022 18:15:25 +0000 (19:15 +0100)]
i2c: i801: make FEATURE_BLOCK_PROC dependent on FEATURE_BLOCK_BUFFER

According to the datasheet the block process call requires block
buffer mode. The user may disable block buffer mode by module
parameter disable_features, in such a case we have to clear
FEATURE_BLOCK_PROC.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: i801: make FEATURE_HOST_NOTIFY dependent on FEATURE_IRQ
Heiner Kallweit [Mon, 19 Dec 2022 18:14:43 +0000 (19:14 +0100)]
i2c: i801: make FEATURE_HOST_NOTIFY dependent on FEATURE_IRQ

Host notification uses an interrupt, therefore it makes sense only if
interrupts are enabled. Make this dependency explicit by removing
FEATURE_HOST_NOTIFY if FEATURE_IRQ isn't set.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: i801: improve interrupt handler
Heiner Kallweit [Mon, 19 Dec 2022 18:13:44 +0000 (19:13 +0100)]
i2c: i801: improve interrupt handler

Not sure if it can happen, but better play safe: If SMBHSTSTS_BYTE_DONE
and an error flag is set, then don't trust the result and skip calling
i801_isr_byte_done(). In addition clear status bit SMBHSTSTS_BYTE_DONE
in the main interrupt handler, this allows to simplify the code a
little.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: st: use pm_sleep_ptr to avoid ifdef CONFIG_PM_SLEEP
Alain Volmat [Mon, 6 Feb 2023 21:03:23 +0000 (22:03 +0100)]
i2c: st: use pm_sleep_ptr to avoid ifdef CONFIG_PM_SLEEP

Rely on pm_sleep_ptr when setting the pm ops and get rid
of the ifdef CONFIG_PM_SLEEP around suspend/resume functions.

Signed-off-by: Alain Volmat <avolmat@me.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agodt-bindings: i2c: uniphier: Add resets property
Kunihiko Hayashi [Thu, 9 Feb 2023 01:43:40 +0000 (10:43 +0900)]
dt-bindings: i2c: uniphier: Add resets property

UniPhier I2C controller allows reset control support.
Add resets property to the controller as optional.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoMAINTAINERS: Add entry for the Loongson LS2X I2C driver
Binbin Zhou [Fri, 3 Feb 2023 10:00:02 +0000 (18:00 +0800)]
MAINTAINERS: Add entry for the Loongson LS2X I2C driver

Add myself as maintainer of the Loongson LS2X I2C driver.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: xiic: Remove interrupt enable/disable in Rx path
Raviteja Narayanam [Thu, 2 Feb 2023 09:41:35 +0000 (15:11 +0530)]
i2c: xiic: Remove interrupt enable/disable in Rx path

'DYNAMIC_MODE_READ_BROKEN_BIT' quirk added in the driver,
effected IP versions no longer enter dynamic mode.
So, remove local_irq_save/local_irq_restore APIs from driver.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>
Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: xiic: Add smbus_block_read functionality
Raviteja Narayanam [Thu, 2 Feb 2023 09:41:34 +0000 (15:11 +0530)]
i2c: xiic: Add smbus_block_read functionality

smbus_block_read is added to xiic driver to read from few sensors
which support this command. Since the number of bytes to read is not
known prior to transfer, xiic standard mode is being used for low level
control of IP.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>
Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: xiic: Add wait for FIFO empty in send_tx
Raviteja Narayanam [Thu, 2 Feb 2023 09:41:33 +0000 (15:11 +0530)]
i2c: xiic: Add wait for FIFO empty in send_tx

If the tx_half_empty interrupt comes first instead of tx_empty,
STOP bit is generated even before all the bytes are transmitted
out on the bus.
STOP bit should be sent only after all the bytes in the FIFO are
transmitted out of the FIFO. So wait until FIFO is empty before sending
the STOP bit.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>
Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: xiic: Switch to Xiic standard mode for i2c-read
Raviteja Narayanam [Thu, 2 Feb 2023 09:41:32 +0000 (15:11 +0530)]
i2c: xiic: Switch to Xiic standard mode for i2c-read

Xilinx I2C IP has two modes of operation, both of which implement
I2C transactions. The only difference from sw perspective is the
programming sequence for these modes.
Dynamic mode  -> Simple to program, less number of steps in sequence.
Standard mode -> Gives flexibility, more number of steps in sequence.

In dynamic mode, during the i2c-read transactions, if there is a
delay(> 200us) between the register writes (address & byte count),
read transaction fails. On a system with load, this scenario is
occurring frequently.
To avoid this, switch to standard mode if there is a read request.

Added a quirk to identify the IP version effected by this and follow
the standard mode.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>
Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: xiic: Fix Rx and Tx paths in standard mode
Raviteja Narayanam [Thu, 2 Feb 2023 09:41:31 +0000 (15:11 +0530)]
i2c: xiic: Fix Rx and Tx paths in standard mode

repeated start

When a combined message request comes from user space, the
controller has to initiate repeated start sequence. In standard
mode, this repeated start sequence is corrupted if there is still
data in the Tx FIFO.

So, always make sure that all the bytes are completely transmitted
out of the FIFO by waiting for TXEMPTY, if the previous message is
of Tx type.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>
Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: xiic: Add standard mode support for > 255 byte
Raviteja Narayanam [Thu, 2 Feb 2023 09:41:30 +0000 (15:11 +0530)]
i2c: xiic: Add standard mode support for > 255 byte

read transfers

Added standard mode for AXI I2C controller to enable read transfers
of size more than 255 bytes. The driver selects standard mode in the
following scenarios.

1. If a single message request comes from user space, requesting a
read of more than 255 bytes

2. If a message set request comes from user space consisting of many
messages and if any one of them is a read operation, irrespective
of the size of transfer. (This is done because it is observed that
repeated start operation is not happening in dynamic mode read as
expected in a message set request from user space.)

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>
Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agoi2c: ls2x: Add driver for Loongson-2K/LS7A I2C controller
Binbin Zhou [Tue, 31 Jan 2023 12:37:31 +0000 (20:37 +0800)]
i2c: ls2x: Add driver for Loongson-2K/LS7A I2C controller

This I2C module is integrated into the Loongson-2K SoCs and Loongson
LS7A bridge chip.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
15 months agodt-bindings: i2c: Add Loongson LS2X I2C controller
Binbin Zhou [Tue, 31 Jan 2023 12:37:30 +0000 (20:37 +0800)]
dt-bindings: i2c: Add Loongson LS2X I2C controller

Add Loongson LS2X I2C controller binding with DT schema format using
json-schema.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: designware: Change from u32 to unsigned int for regmap_read() calls
Shyam Sundar S K [Tue, 24 Jan 2023 11:47:32 +0000 (17:17 +0530)]
i2c: designware: Change from u32 to unsigned int for regmap_read() calls

regmap_read() API signature expects the caller to send "unsigned int"
type to return back the read value, but there are some occurrences of 'u32'
across i2c-designware-* files.

Change them to match the regmap_read() signature.

Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: designware: add a new bit check for IC_CON control
Shyam Sundar S K [Tue, 24 Jan 2023 11:11:27 +0000 (16:41 +0530)]
i2c: designware: add a new bit check for IC_CON control

On some AMD platforms, based on the new designware datasheet,
BIOS sets the BIT(11) within the IC_CON register to advertise
the "bus clear feature capability".

AMD/Designware datasheet says:

Bit(11) BUS_CLEAR_FEATURE_CTRL. Read-write,Volatile. Reset: 0.
Description: In Master mode:
- 1'b1: Bus Clear Feature is enabled.
- 1'b0: Bus Clear Feature is Disabled.
In Slave mode, this register bit is not applicable.

On AMD platform designs:
1. BIOS programs the BUS_CLEAR_FEATURE_CTRL and enables the detection
of SCL/SDA stuck low.
2. Whenever the stuck low is detected, the SMU FW shall do the bus
recovery procedure.

Currently, the way in which the "master_cfg" is built in the driver, it
overrides the BUS_CLEAR_FEATURE_CTRL advertised by BIOS and the SMU FW
cannot initiate the bus recovery if the stuck low is detected.

Hence add a check in i2c_dw_probe_master() that if the BIOS
advertises the bus clear feature, let driver not ignore it and
adapt accordingly.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: gpio: support write-only sda/scl w/o pull-up
Heiner Kallweit [Wed, 18 Jan 2023 21:55:12 +0000 (22:55 +0100)]
i2c: gpio: support write-only sda/scl w/o pull-up

There are slave devices that understand I2C but have read-only SDA and
SCL. Examples are FD650 7-segment LED controller and its derivatives.
Typical board designs don't even have a pull-up for both pins.
Handle the new attributes for write-only SDA and missing pull-up on
SDA/SCL.

For either pin the open-drain and has-no-pullup properties are
mutually-exclusive, what is documented in the DT property documentation.
We don't add an extra warning here because the open-drain properties
are marked deprecated anyway.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
[wsa: switched to device properties]
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: algo: bit: allow getsda to be NULL
Heiner Kallweit [Wed, 18 Jan 2023 21:54:03 +0000 (22:54 +0100)]
i2c: algo: bit: allow getsda to be NULL

This is in preparation of supporting write-only SDA in i2c-gpio.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agodt-bindings: i2c: gpio: Add properties for dealing with write-only SDA/SCL w/o pullup
Heiner Kallweit [Wed, 18 Jan 2023 21:51:58 +0000 (22:51 +0100)]
dt-bindings: i2c: gpio: Add properties for dealing with write-only SDA/SCL w/o pullup

There are slave devices that understand I2C but have read-only SDA and
SCL. Examples are FD650 7-segment LED controller and its derivatives.
Typical board designs don't even have a pull-up for both pins.
Therefore add properties for not using open-drain. For write-only SCL
we have a property already, add one for write-only SDA.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agodt-bindings: i2c: qcom-cci: Document SM6350 compatible
Luca Weiss [Fri, 20 Jan 2023 13:13:44 +0000 (14:13 +0100)]
dt-bindings: i2c: qcom-cci: Document SM6350 compatible

Document the compatible for the CCI block found on SM6350 SoC.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: au1550: Use devm_platform_get_and_ioremap_resource()
ye xingchen [Thu, 19 Jan 2023 09:17:21 +0000 (17:17 +0800)]
i2c: au1550: Use devm_platform_get_and_ioremap_resource()

Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: mt65xx: Use devm_platform_get_and_ioremap_resource()
ye xingchen [Thu, 19 Jan 2023 09:19:58 +0000 (17:19 +0800)]
i2c: mt65xx: Use devm_platform_get_and_ioremap_resource()

Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: bcm2835: Use devm_platform_get_and_ioremap_resource()
ye xingchen [Thu, 19 Jan 2023 09:18:47 +0000 (17:18 +0800)]
i2c: bcm2835: Use devm_platform_get_and_ioremap_resource()

Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: aspeed: Use devm_platform_get_and_ioremap_resource()
ye xingchen [Thu, 19 Jan 2023 09:15:31 +0000 (17:15 +0800)]
i2c: aspeed: Use devm_platform_get_and_ioremap_resource()

Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: gpio: Add support on ACPI-based system
Binbin Zhou [Tue, 10 Jan 2023 13:03:53 +0000 (21:03 +0800)]
i2c: gpio: Add support on ACPI-based system

Add support for the ACPI-based device registration, so that the driver
can be also enabled through ACPI table.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Tested-by: Peibao Liu <liupeibao@loongson.cn>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: cadence: Remove redundant expression in if clause
Lars-Peter Clausen [Sat, 7 Jan 2023 21:18:12 +0000 (13:18 -0800)]
i2c: cadence: Remove redundant expression in if clause

In the mrecv() function the Cadence I2C driver has the following expression
in an if clause.

((id->p_msg->flags & I2C_M_RECV_LEN) != I2C_M_RECV_LEN) &&
 (id->recv_count <= CDNS_I2C_FIFO_DEPTH))

Earlier in the same function when I2C_M_RECV_LEN is set the recv_count is
initialized to a value that is larger than CDNS_I2C_FIFO_DEPTH. This means
if the first expression is false the second expression is also false.
Checking the first expression is thus redundant and can be removed.

This slightly simplifies the logic.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: cadence: Remove `irq` field from driver state struct
Lars-Peter Clausen [Sat, 7 Jan 2023 21:18:11 +0000 (13:18 -0800)]
i2c: cadence: Remove `irq` field from driver state struct

The irq field of the driver state struct is only used in the probe
function. There is no need to keep it around. Remove it from the state
struct and use a on-stack variable instead.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: cadence: Remove unused CDNS_I2C_DATA_INTR_DEPTH define
Lars-Peter Clausen [Sat, 7 Jan 2023 21:18:10 +0000 (13:18 -0800)]
i2c: cadence: Remove unused CDNS_I2C_DATA_INTR_DEPTH define

The CDNS_I2C_DATA_INTR_DEPTH is not used in the Cadence I2C driver. Remove
it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: Set i2c pinctrl recovery info from it's device pinctrl
Hanna Hawa [Wed, 28 Dec 2022 16:48:13 +0000 (16:48 +0000)]
i2c: Set i2c pinctrl recovery info from it's device pinctrl

Currently the i2c subsystem rely on the controller device tree to
initialize the pinctrl recovery information, part of the drivers does
not set this field (rinfo->pinctrl), for example i2c DesignWare driver.

The pins information is saved part of the device structure before probe
and it's done on pinctrl_bind_pins().

Make the i2c init recovery to get the device pins if it's not
initialized by the driver from the device pins.

Signed-off-by: Hanna Hawa <hhhawa@amazon.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agopinctrl: Add an API to get the pinctrl pins if initialized
Hanna Hawa [Wed, 28 Dec 2022 16:48:12 +0000 (16:48 +0000)]
pinctrl: Add an API to get the pinctrl pins if initialized

Add an API to get the pinctrl pins if it was initialized before driver
probed. This API will be used in I2C core to get the device pinctrl
information for recovery state change.

Signed-off-by: Hanna Hawa <hhhawa@amazon.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agodt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC
Fabien Parent [Thu, 19 Jan 2023 17:08:52 +0000 (18:08 +0100)]
dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

Add binding documentation for the MT8365 I2C controllers.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: dev: fix notifier return values
Bartosz Golaszewski [Thu, 29 Dec 2022 16:00:44 +0000 (17:00 +0100)]
i2c: dev: fix notifier return values

We have a set of return values that notifier callbacks can return. They
should not return 0, error codes or anything other than those predefined
values. Make the i2c character device's callback return NOTIFY_DONE or
NOTIFY_OK depending on the situation.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoMerge branch 'i2c/fwnode-api' into i2c/for-mergewindow
Wolfram Sang [Tue, 17 Jan 2023 08:50:02 +0000 (09:50 +0100)]
Merge branch 'i2c/fwnode-api' into i2c/for-mergewindow

16 months agoi2c: add fwnode APIs
Russell King (Oracle) [Wed, 11 Jan 2023 10:54:21 +0000 (10:54 +0000)]
i2c: add fwnode APIs

Add fwnode APIs for finding and getting I2C adapters, which will be
used by the SFP code. These are passed the fwnode corresponding to
the adapter, and return the I2C adapter. It is the responsibility of
the caller to find the appropriate fwnode.

We keep the DT and ACPI interfaces, but where appropriate, recode them
to use the fwnode interfaces internally.

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: qcom-geni: change i2c_master_hub to static
Yang Yingliang [Wed, 28 Dec 2022 09:34:02 +0000 (17:34 +0800)]
i2c: qcom-geni: change i2c_master_hub to static

i2c_master_hub is only used in i2c-qcom-geni.c now,
change it to static.

Fixes: cacd9643eca7 ("i2c: qcom-geni: add support for I2C Master Hub variant")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: designware: fix i2c_dw_clk_rate() return size to be u32
Hanna Hawa [Mon, 19 Dec 2022 17:23:45 +0000 (17:23 +0000)]
i2c: designware: fix i2c_dw_clk_rate() return size to be u32

Make i2c_dw_clk_rate() to return u32 instead of unsigned long, as the
function return the value of get_clk_rate_khz() which returns u32.

Fixes: b33af11de236 ("i2c: designware: Do not require clock when SSCN and FFCN are provided")
Signed-off-by: Hanna Hawa <hhhawa@amazon.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoi2c: qcom-cci: Deprecate duplicated compatibles
Konrad Dybcio [Tue, 13 Dec 2022 18:33:05 +0000 (19:33 +0100)]
i2c: qcom-cci: Deprecate duplicated compatibles

Many compatibles have been introduced, pointing to the same config data.
Leave a note reminding future developers to not do that again.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agodt-bindings: i2c: qcom,i2c-cci: Fall back to common compatibles
Konrad Dybcio [Tue, 13 Dec 2022 18:33:00 +0000 (19:33 +0100)]
dt-bindings: i2c: qcom,i2c-cci: Fall back to common compatibles

Almost every compatible string in the CCI driver is a duplicate. Adjust
the bindings to include a common (first-soc-implementing-vX) compatible
to remove the need to keep adding superfluous compatible strings.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
16 months agoLinux 6.2-rc3 v6.2-rc3
Linus Torvalds [Sun, 8 Jan 2023 17:49:43 +0000 (11:49 -0600)]
Linux 6.2-rc3

16 months agoMerge tag 'powerpc-6.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 8 Jan 2023 13:55:08 +0000 (06:55 -0700)]
Merge tag 'powerpc-6.2-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Three fixes for various bogosity in our linker script, revealed
   by the recent commit which changed discard behaviour with some
   toolchains.

* tag 'powerpc-6.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/vmlinux.lds: Don't discard .comment
  powerpc/vmlinux.lds: Don't discard .rela* for relocatable builds
  powerpc/vmlinux.lds: Define RUNTIME_DISCARD_EXIT

16 months agoMerge tag 'fixes-2023-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt...
Linus Torvalds [Sun, 8 Jan 2023 10:54:24 +0000 (02:54 -0800)]
Merge tag 'fixes-2023-01-08' of git://git./linux/kernel/git/rppt/memblock

Pull memblock fixes from Mike Rapoport:
 "Small fixes in kernel-doc and tests:

   - Fix kernel-doc for memblock_phys_free() to use correct names for
     the counterpart allocation methods

   - Fix compilation error in memblock tests"

* tag 'fixes-2023-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  memblock: Fix doc for memblock_phys_free
  memblock tests: Fix compilation error.

16 months agoMerge tag 'nfs-for-6.2-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Sat, 7 Jan 2023 18:38:11 +0000 (10:38 -0800)]
Merge tag 'nfs-for-6.2-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client fixes from Trond Myklebust:

 - Fix a race in the RPCSEC_GSS upcall code that causes hung RPC calls

 - Fix a broken coalescing test in the pNFS file layout driver

 - Ensure that the access cache rcu path also applies the login test

 - Fix up for a sparse warning

* tag 'nfs-for-6.2-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: Fix up a sparse warning
  NFS: Judge the file access cache's timestamp in rcu path
  pNFS/filelayout: Fix coalescing test for single DS
  SUNRPC: ensure the matching upcall is in-flight upon downcall

16 months agoMerge tag '6.2-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 7 Jan 2023 18:26:34 +0000 (10:26 -0800)]
Merge tag '6.2-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "cifs/smb3 client fixes:

   - two multichannel fixes

   - three reconnect fixes

   - unmap fix"

* tag '6.2-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix interface count calculation during refresh
  cifs: refcount only the selected iface during interface update
  cifs: protect access of TCP_Server_Info::{dstaddr,hostname}
  cifs: fix race in assemble_neg_contexts()
  cifs: ignore ipc reconnect failures during dfs failover
  cifs: Fix kmap_local_page() unmapping

16 months agoMerge tag 'devicetree-fixes-for-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 7 Jan 2023 18:20:33 +0000 (10:20 -0800)]
Merge tag 'devicetree-fixes-for-6.2-1' of git://git./linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Fix DT memory scanning for some MIPS boards when memory is not
   specified in DT

 - Redo CONFIG_CMDLINE* handling for missing /chosen node. The first
   attempt broke PS3 (and possibly other PPC platforms).

 - Fix constraints in QCom Soundwire schema

* tag 'devicetree-fixes-for-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: fdt: Honor CONFIG_CMDLINE* even without /chosen node, take 2
  Revert "of: fdt: Honor CONFIG_CMDLINE* even without /chosen node"
  dt-bindings: soundwire: qcom,soundwire: correct sizes related to number of ports
  of/fdt: run soc memory setup when early_init_dt_scan_memory fails

16 months agoMerge tag 'usb-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sat, 7 Jan 2023 18:12:42 +0000 (10:12 -0800)]
Merge tag 'usb-6.2-rc3' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB driver fixes for 6.2-rc3 that resolve some
  reported issues. They include:

   - of-reported ulpi problem, so the offending commit is reverted

   - dwc3 driver bugfixes for recent changes

   - fotg210 fixes

  Most of these have been in linux-next for a while, the last few were
  on the mailing list for a long time and passed all the 0-day bot
  testing so all should be fine with them as well"

* tag 'usb-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: dwc3: gadget: Ignore End Transfer delay on teardown
  usb: dwc3: xilinx: include linux/gpio/consumer.h
  usb: fotg210-udc: fix error return code in fotg210_udc_probe()
  usb: fotg210: fix OTG-only build
  Revert "usb: ulpi: defer ulpi_register on ulpi_read_id timeout"

16 months agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Sat, 7 Jan 2023 18:06:47 +0000 (10:06 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Most noticeable is that Yishai found a big data corruption regression
  due to a change in the scatterlist:

   - Do not wrongly combine non-contiguous pages in scatterlist

   - Fix compilation warnings on gcc 13

   - Oops when using some mlx5 stats

   - Bad enforcement of atomic responder resources in mlx5"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  lib/scatterlist: Fix to merge contiguous pages into the last SG properly
  RDMA/mlx5: Fix validation of max_rd_atomic caps for DC
  RDMA/mlx5: Fix mlx5_ib_get_hw_stats when used for device
  RDMA/srp: Move large values to a new enum for gcc13

16 months agoMerge tag 'kbuild-fixes-v6.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 7 Jan 2023 17:49:52 +0000 (09:49 -0800)]
Merge tag 'kbuild-fixes-v6.2-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix single *.ko build

 - Fix module builds when vmlinux.o or Module.symver is missing

* tag 'kbuild-fixes-v6.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: readd -w option when vmlinux.o or Module.symver is missing
  kbuild: fix single *.ko build

16 months agoMerge tag 'drm-fixes-2023-01-06' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 6 Jan 2023 23:54:25 +0000 (15:54 -0800)]
Merge tag 'drm-fixes-2023-01-06' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Daniel Vetter:
 "Still not much, but more than last week. Dave should be back next week
  from the beaching.

  drivers:
   - i915-gvt fixes
   - amdgpu/kfd fixes
   - panfrost bo refcounting fix
   - meson afbc corruption fix
   - imx plane width fix

  core:
   - drm/sched fixes
   - drm/mm kunit test fix
   - dma-buf export error handling fixes"

* tag 'drm-fixes-2023-01-06' of git://anongit.freedesktop.org/drm/drm:
  Revert "drm/amd/display: Enable Freesync Video Mode by default"
  drm/i915/gvt: fix double free bug in split_2MB_gtt_entry
  drm/i915/gvt: use atomic operations to change the vGPU status
  drm/i915/gvt: fix vgpu debugfs clean in remove
  drm/i915/gvt: fix gvt debugfs destroy
  drm/i915: unpin on error in intel_vgpu_shadow_mm_pin()
  drm/amd/display: Uninitialized variables causing 4k60 UCLK to stay at DPM1 and not DPM0
  drm/amdkfd: Fix kernel warning during topology setup
  drm/scheduler: Fix lockup in drm_sched_entity_kill()
  drm/imx: ipuv3-plane: Fix overlay plane width
  drm/scheduler: Fix lockup in drm_sched_entity_kill()
  drm/virtio: Fix memory leak in virtio_gpu_object_create()
  drm/meson: Reduce the FIFO lines held when AFBC is not used
  drm/tests: reduce drm_mm_test stack usage
  drm/panfrost: Fix GEM handle creation ref-counting
  drm/plane-helper: Add the missing declaration of drm_atomic_state
  dma-buf: fix dma_buf_export init order v2

16 months agotpm: Allow system suspend to continue when TPM suspend fails
Jason A. Donenfeld [Fri, 6 Jan 2023 03:01:56 +0000 (04:01 +0100)]
tpm: Allow system suspend to continue when TPM suspend fails

TPM 1 is sometimes broken across system suspends, due to races or
locking issues or something else that haven't been diagnosed or fixed
yet, most likely having to do with concurrent reads from the TPM's
hardware random number generator driver. These issues prevent the system
from actually suspending, with errors like:

  tpm tpm0: A TPM error (28) occurred continue selftest
  ...
  tpm tpm0: A TPM error (28) occurred attempting get random
  ...
  tpm tpm0: Error (28) sending savestate before suspend
  tpm_tis 00:08: PM: __pnp_bus_suspend(): tpm_pm_suspend+0x0/0x80 returns 28
  tpm_tis 00:08: PM: dpm_run_callback(): pnp_bus_suspend+0x0/0x10 returns 28
  tpm_tis 00:08: PM: failed to suspend: error 28
  PM: Some devices failed to suspend, or early wake event detected

This issue was partially fixed by 23393c646142 ("char: tpm: Protect
tpm_pm_suspend with locks"), in a last minute 6.1 commit that Linus took
directly because the TPM maintainers weren't available. However, it
seems like this just addresses the most common cases of the bug, rather
than addressing it entirely. So there are more things to fix still,
apparently.

In lieu of actually fixing the underlying bug, just allow system suspend
to continue, so that laptops still go to sleep fine. Later, this can be
reverted when the real bug is fixed.

Link: https://lore.kernel.org/lkml/7cbe96cf-e0b5-ba63-d1b4-f63d2e826efa@suse.cz/
Cc: stable@vger.kernel.org # 6.1+
Reported-by: Vlastimil Babka <vbabka@suse.cz>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Luigi Semenzato <semenzato@chromium.org>
Cc: Peter Huewe <peterhuewe@gmx.de>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Johannes Altmanninger <aclopte@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 months agohfs/hfsplus: avoid WARN_ON() for sanity check, use proper error handling
Linus Torvalds [Wed, 4 Jan 2023 19:06:28 +0000 (11:06 -0800)]
hfs/hfsplus: avoid WARN_ON() for sanity check, use proper error handling

Commit 55d1cbbbb29e ("hfs/hfsplus: use WARN_ON for sanity check") fixed
a build warning by turning a comment into a WARN_ON(), but it turns out
that syzbot then complains because it can trigger said warning with a
corrupted hfs image.

The warning actually does warn about a bad situation, but we are much
better off just handling it as the error it is.  So rather than warn
about us doing bad things, stop doing the bad things and return -EIO.

While at it, also fix a memory leak that was introduced by an earlier
fix for a similar syzbot warning situation, and add a check for one case
that historically wasn't handled at all (ie neither comment nor
subsequent WARN_ON).

Reported-by: syzbot+7bb7cd3595533513a9e7@syzkaller.appspotmail.com
Fixes: 55d1cbbbb29e ("hfs/hfsplus: use WARN_ON for sanity check")
Fixes: 8d824e69d9f3 ("hfs: fix OOB Read in __hfs_brec_find")
Link: https://lore.kernel.org/lkml/000000000000dbce4e05f170f289@google.com/
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Viacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 months agoMerge tag 'block-2023-01-06' of git://git.kernel.dk/linux
Linus Torvalds [Fri, 6 Jan 2023 21:12:42 +0000 (13:12 -0800)]
Merge tag 'block-2023-01-06' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:
 "The big change here is obviously the revert of the pktcdvd driver
  removal. Outside of that, just minor tweaks. In detail:

   - Re-instate the pktcdvd driver, which necessitates adding back
     bio_copy_data_iter() and the fops->devnode() hook for now (me)

   - Fix for splitting of a bio marked as NOWAIT, causing either nowait
     reads or writes to error with EAGAIN even if parts of the IO
     completed (me)

   - Fix for ublk, punting management commands to io-wq as they can all
     easily block for extended periods of time (Ming)

   - Removal of SRCU dependency for the block layer (Paul)"

* tag 'block-2023-01-06' of git://git.kernel.dk/linux:
  block: Remove "select SRCU"
  Revert "pktcdvd: remove driver."
  Revert "block: remove devnode callback from struct block_device_operations"
  Revert "block: bio_copy_data_iter"
  ublk: honor IO_URING_F_NONBLOCK for handling control command
  block: don't allow splitting of a REQ_NOWAIT bio
  block: handle bio_split_to_limits() NULL return

16 months agoMerge tag 'io_uring-2023-01-06' of git://git.kernel.dk/linux
Linus Torvalds [Fri, 6 Jan 2023 21:05:13 +0000 (13:05 -0800)]
Merge tag 'io_uring-2023-01-06' of git://git.kernel.dk/linux

Pull io_uring fixes from Jens Axboe:
 "A few minor fixes that should go into the 6.2 release:

   - Fix for a memory leak in io-wq worker creation, if we ultimately
     end up canceling the worker creation before it gets created (me)

   - lockdep annotations for the CQ locking (Pavel)

   - A regression fix for CQ timeout handling (Pavel)

   - Ring pinning around deferred task_work fix (Pavel)

   - A trivial member move in struct io_ring_ctx, saving us some memory
     (me)"

* tag 'io_uring-2023-01-06' of git://git.kernel.dk/linux:
  io_uring: fix CQ waiting timeout handling
  io_uring: move 'poll_multi_queue' bool in io_ring_ctx
  io_uring: lockdep annotate CQ locking
  io_uring: pin context while queueing deferred tw
  io_uring/io-wq: free worker if task_work creation is canceled

16 months agoMerge tag 'tif-notify-signal-2023-01-06' of git://git.kernel.dk/linux
Linus Torvalds [Fri, 6 Jan 2023 20:54:51 +0000 (12:54 -0800)]
Merge tag 'tif-notify-signal-2023-01-06' of git://git.kernel.dk/linux

Pull arm TIF_NOTIFY_SIGNAL fixup from Jens Axboe:
 "Hui Tang reported a performance regressions with _TIF_WORK_MASK in
  newer kernels, which he tracked to a change that went into 5.11. After
  this change, we'll call do_work_pending() more often than we need to,
  because we're now testing bits 0..15 rather than just 0..7.

  Shuffle the bits around to avoid this"

* tag 'tif-notify-signal-2023-01-06' of git://git.kernel.dk/linux:
  ARM: renumber bits related to _TIF_WORK_MASK

16 months agoMerge tag 'ceph-for-6.2-rc3' of https://github.com/ceph/ceph-client
Linus Torvalds [Fri, 6 Jan 2023 20:11:41 +0000 (12:11 -0800)]
Merge tag 'ceph-for-6.2-rc3' of https://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "Two file locking fixes from Xiubo"

* tag 'ceph-for-6.2-rc3' of https://github.com/ceph/ceph-client:
  ceph: avoid use-after-free in ceph_fl_release_lock()
  ceph: switch to vfs_inode_has_locks() to fix file lock bug

16 months agoMerge tag 'fixes_for_v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack...
Linus Torvalds [Fri, 6 Jan 2023 20:07:00 +0000 (12:07 -0800)]
Merge tag 'fixes_for_v6.2-rc3' of git://git./linux/kernel/git/jack/linux-fs

Pull UDF fixes from Jan Kara:
 "Two fixups of the UDF changes that went into 6.2-rc1"

* tag 'fixes_for_v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: initialize newblock to 0
  udf: Fix extension of the last extent in the file

16 months agoMerge tag 'for-6.2-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Fri, 6 Jan 2023 20:01:49 +0000 (12:01 -0800)]
Merge tag 'for-6.2-rc2-tag' of git://git./linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "A few more regression and regular fixes:

   - regressions:
       - fix assertion condition using = instead of ==
       - fix false alert on bad tree level check
       - fix off-by-one error in delalloc search during lseek

   - fix compat ro feature check at read-write remount

   - handle case when read-repair happens with ongoing device replace

   - updated error messages"

* tag 'for-6.2-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix compat_ro checks against remount
  btrfs: always report error in run_one_delayed_ref()
  btrfs: handle case when repair happens with dev-replace
  btrfs: fix off-by-one in delalloc search during lseek
  btrfs: fix false alert on bad tree level check
  btrfs: add error message for metadata level mismatch
  btrfs: fix ASSERT em->len condition in btrfs_get_extent

16 months agoMerge tag 'riscv-for-linus-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 6 Jan 2023 19:33:42 +0000 (11:33 -0800)]
Merge tag 'riscv-for-linus-6.2-rc3' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - use the correct mask for c.jr/c.jalr when decoding instructions

 - build fix for get_user() to avoid a sparse warning

* tag 'riscv-for-linus-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: uaccess: fix type of 0 variable on error in get_user()
  riscv, kprobes: Stricter c.jr/c.jalr decoding

16 months agoMerge tag 'perf-tools-fixes-for-v6.2-1-2023-01-06' of git://git.kernel.org/pub/scm...
Linus Torvalds [Fri, 6 Jan 2023 19:23:58 +0000 (11:23 -0800)]
Merge tag 'perf-tools-fixes-for-v6.2-1-2023-01-06' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix segfault when trying to process tracepoints present in a
   perf.data file and not linked with libtraceevent.

 - Fix build on uClibc systems by adding missing sys/types.h include,
   that was being obtained indirectly which stopped being the case when
   tools/lib/traceevent was removed.

 - Don't show commands in 'perf help' that depend on linking with
   libtraceevent when not building with that library, which is now a
   possibility since we no longer ship a copy in tools/lib/traceevent.

 - Fix failure in 'perf test' entry testing the combination of 'perf
   probe' user space function + 'perf record' + 'perf script' where it
   expects a backtrace leading to glibc's inet_pton() from 'ping' that
   now happens more than once with glibc 2.35 for IPv6 addreses.

 - Fix for the inet_pton perf test on s/390 where
   'text_to_binary_address' now appears on the backtrace.

 - Fix build error on riscv due to missing header for 'struct
   perf_sample'.

 - Fix 'make -C tools perf_install' install variant by not propagating
   the 'subdir' to submakes for the 'install_headers' targets.

 - Fix handling of unsupported cgroup events when using BPF counters in
   'perf stat'.

 - Count all cgroups, not just the last one when using 'perf stat' and
   combining --for-each-cgroup with --bpf-counters.

   This makes the output using BPF counters match the output without
   using it, which was the intention all along, the output should be the
   same using --bpf-counters or not.

 - Fix 'perf lock contention' core dump related to not finding the
   "__sched_text_end" symbol on s/390.

 - Fix build failure when HEAD is signed: exclude the signature from the
   version string.

 - Add missing closedir() calls to in perf_data__open_dir(), plugging a
   fd leak.

* tag 'perf-tools-fixes-for-v6.2-1-2023-01-06' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf tools: Fix build on uClibc systems by adding missing sys/types.h include
  perf stat: Fix handling of --for-each-cgroup with --bpf-counters to match non BPF mode
  perf stat: Fix handling of unsupported cgroup events when using BPF counters
  perf test record_probe_libc_inet_pton: Fix test on s/390 where 'text_to_binary_address' now appears on the backtrace
  perf lock contention: Fix core dump related to not finding the "__sched_text_end" symbol on s/390
  perf build: Don't propagate subdir to submakes for install_headers
  perf test record_probe_libc_inet_pton: Fix failure due to extra inet_pton() backtrace in glibc >= 2.35
  perf tools: Fix segfault when trying to process tracepoints in perf.data and not linked with libtraceevent
  perf tools: Don't include signature in version strings
  perf help: Use HAVE_LIBTRACEEVENT to filter out unsupported commands
  perf tools riscv: Fix build error on riscv due to missing header for 'struct perf_sample'
  perf tools: Fix resources leak in perf_data__open_dir()

16 months agoMerge tag 'perf-urgent-2023-01-06' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 6 Jan 2023 19:20:12 +0000 (11:20 -0800)]
Merge tag 'perf-urgent-2023-01-06' of git://git./linux/kernel/git/tip/tip

Pull perf fix from Ingo Molnar:
 "Intel RAPL updates for new model IDs"

* tag 'perf-urgent-2023-01-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/rapl: Add support for Intel Emerald Rapids
  perf/x86/rapl: Add support for Intel Meteor Lake
  perf/x86/rapl: Treat Tigerlake like Icelake

16 months agoMerge tag 'v6.2-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Fri, 6 Jan 2023 19:14:11 +0000 (11:14 -0800)]
Merge tag 'v6.2-p2' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This fixes a CFI crash in arm64/sm4 as well as a regression in the
  caam driver"

* tag 'v6.2-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: arm64/sm4 - fix possible crash with CFI enabled
  crypto: caam - fix CAAM io mem access in blob_gen

16 months agousb: dwc3: gadget: Ignore End Transfer delay on teardown
Thinh Nguyen [Fri, 9 Dec 2022 00:50:35 +0000 (16:50 -0800)]
usb: dwc3: gadget: Ignore End Transfer delay on teardown

If we delay sending End Transfer for Setup TRB to be prepared, we need
to check if the End Transfer was in preparation for a driver
teardown/soft-disconnect. In those cases, just send the End Transfer
command without delay.

In the case of soft-disconnect, there's a very small chance the command
may not go through immediately. But should it happen, the Setup TRB will
be prepared during the polling of the controller halted state, allowing
the command to go through then.

In the case of disabling endpoint due to reconfiguration (e.g.
set_interface(alt-setting) or usb reset), then it's driven by the host.
Typically the host wouldn't immediately cancel the control request and
send another control transfer to trigger the End Transfer command
timeout.

Fixes: 4db0fbb60136 ("usb: dwc3: gadget: Don't delay End Transfer on delayed_status")
Cc: stable@vger.kernel.org
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/f1617a323e190b9cc408fb8b65456e32b5814113.1670546756.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
16 months agousb: dwc3: xilinx: include linux/gpio/consumer.h
Arnd Bergmann [Tue, 3 Jan 2023 12:17:46 +0000 (13:17 +0100)]
usb: dwc3: xilinx: include linux/gpio/consumer.h

The newly added gpio consumer calls cause a build failure in configurations
that fail to include the right header implicitly:

drivers/usb/dwc3/dwc3-xilinx.c: In function 'dwc3_xlnx_init_zynqmp':
drivers/usb/dwc3/dwc3-xilinx.c:207:22: error: implicit declaration of function 'devm_gpiod_get_optional'; did you mean 'devm_clk_get_optional'? [-Werror=implicit-function-declaration]
  207 |         reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
      |                      ^~~~~~~~~~~~~~~~~~~~~~~
      |                      devm_clk_get_optional

Fixes: ca05b38252d7 ("usb: dwc3: xilinx: Add gpio-reset support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230103121755.956027-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
16 months agoudf: initialize newblock to 0
Tom Rix [Fri, 30 Dec 2022 17:53:41 +0000 (12:53 -0500)]
udf: initialize newblock to 0

The clang build reports this error
fs/udf/inode.c:805:6: error: variable 'newblock' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
        if (*err < 0)
            ^~~~~~~~
newblock is never set before error handling jump.
Initialize newblock to 0 and remove redundant settings.

Fixes: d8b39db5fab8 ("udf: Handle error when adding extent to a file")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20221230175341.1629734-1-trix@redhat.com>

16 months agoudf: Fix extension of the last extent in the file
Jan Kara [Wed, 21 Dec 2022 16:45:51 +0000 (17:45 +0100)]
udf: Fix extension of the last extent in the file

When extending the last extent in the file within the last block, we
wrongly computed the length of the last extent. This is mostly a
cosmetical problem since the extent does not contain any data and the
length will be fixed up by following operations but still.

Fixes: 1f3868f06855 ("udf: Fix extending file within last block")
Signed-off-by: Jan Kara <jack@suse.cz>
16 months agoMerge tag 'drm-intel-fixes-2023-01-05' of git://anongit.freedesktop.org/drm/drm-intel...
Daniel Vetter [Fri, 6 Jan 2023 09:16:48 +0000 (10:16 +0100)]
Merge tag 'drm-intel-fixes-2023-01-05' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

Only gvt-fixes:
     - debugfs fixes (Zhenyu)
     - fix up for vgpu status (Zhi)
     - double free fix in split_2MB_gtt_entry (Zheng)

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Y7cszBkLRvAy6uao@intel.com
16 months agousb: fotg210-udc: fix error return code in fotg210_udc_probe()
Yang Yingliang [Fri, 30 Dec 2022 06:54:27 +0000 (14:54 +0800)]
usb: fotg210-udc: fix error return code in fotg210_udc_probe()

After commit  5f217ccd520f ("fotg210-udc: Support optional external PHY"),
the error code is re-assigned to 0 in fotg210_udc_probe(), if allocate or
map memory fails after the assignment, it can't return an error code. Set
the error code to -ENOMEM to fix this problem.

Fixes: 5f217ccd520f ("fotg210-udc: Support optional external PHY")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20221230065427.944586-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
16 months agoMerge tag 'thermal-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Thu, 5 Jan 2023 21:48:49 +0000 (13:48 -0800)]
Merge tag 'thermal-6.2-rc3' of git://git./linux/kernel/git/rafael/linux-pm

Pull thermal control fix from Rafael Wysocki:
 "Add a missing sysfs attribute to the int340x thermal driver (Srinivas
  Pandruvada)"

* tag 'thermal-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: int340x: Add missing attribute for data rate base

16 months agoMerge tag 'net-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 5 Jan 2023 20:40:50 +0000 (12:40 -0800)]
Merge tag 'net-6.2-rc3' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bpf, wifi, and netfilter.

  Current release - regressions:

   - bpf: fix nullness propagation for reg to reg comparisons, avoid
     null-deref

   - inet: control sockets should not use current thread task_frag

   - bpf: always use maximal size for copy_array()

   - eth: bnxt_en: don't link netdev to a devlink port for VFs

  Current release - new code bugs:

   - rxrpc: fix a couple of potential use-after-frees

   - netfilter: conntrack: fix IPv6 exthdr error check

   - wifi: iwlwifi: fw: skip PPAG for JF, avoid FW crashes

   - eth: dsa: qca8k: various fixes for the in-band register access

   - eth: nfp: fix schedule in atomic context when sync mc address

   - eth: renesas: rswitch: fix getting mac address from device tree

   - mobile: ipa: use proper endpoint mask for suspend

  Previous releases - regressions:

   - tcp: add TIME_WAIT sockets in bhash2, fix regression caught by
     Jiri / python tests

   - net: tc: don't intepret cls results when asked to drop, fix
     oob-access

   - vrf: determine the dst using the original ifindex for multicast

   - eth: bnxt_en:
      - fix XDP RX path if BPF adjusted packet length
      - fix HDS (header placement) and jumbo thresholds for RX packets

   - eth: ice: xsk: do not use xdp_return_frame() on tx_buf->raw_buf,
     avoid memory corruptions

  Previous releases - always broken:

   - ulp: prevent ULP without clone op from entering the LISTEN status

   - veth: fix race with AF_XDP exposing old or uninitialized
     descriptors

   - bpf:
      - pull before calling skb_postpull_rcsum() (fix checksum support
        and avoid a WARN())
      - fix panic due to wrong pageattr of im->image (when livepatch and
        kretfunc coexist)
      - keep a reference to the mm, in case the task is dead

   - mptcp: fix deadlock in fastopen error path

   - netfilter:
      - nf_tables: perform type checking for existing sets
      - nf_tables: honor set timeout and garbage collection updates
      - ipset: fix hash:net,port,net hang with /0 subnet
      - ipset: avoid hung task warning when adding/deleting entries

   - selftests: net:
      - fix cmsg_so_mark.sh test hang on non-x86 systems
      - fix the arp_ndisc_evict_nocarrier test for IPv6

   - usb: rndis_host: secure rndis_query check against int overflow

   - eth: r8169: fix dmar pte write access during suspend/resume with
     WOL

   - eth: lan966x: fix configuration of the PCS

   - eth: sparx5: fix reading of the MAC address

   - eth: qed: allow sleep in qed_mcp_trace_dump()

   - eth: hns3:
      - fix interrupts re-initialization after VF FLR
      - fix handling of promisc when MAC addr table gets full
      - refine the handling for VF heartbeat

   - eth: mlx5:
      - properly handle ingress QinQ-tagged packets on VST
      - fix io_eq_size and event_eq_size params validation on big endian
      - fix RoCE setting at HCA level if not supported at all
      - don't turn CQE compression on by default for IPoIB

   - eth: ena:
      - fix toeplitz initial hash key value
      - account for the number of XDP-processed bytes in interface stats
      - fix rx_copybreak value update

  Misc:

   - ethtool: harden phy stat handling against buggy drivers

   - docs: netdev: convert maintainer's doc from FAQ to a normal
     document"

* tag 'net-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (112 commits)
  caif: fix memory leak in cfctrl_linkup_request()
  inet: control sockets should not use current thread task_frag
  net/ulp: prevent ULP without clone op from entering the LISTEN status
  qed: allow sleep in qed_mcp_trace_dump()
  MAINTAINERS: Update maintainers for ptp_vmw driver
  usb: rndis_host: Secure rndis_query check against int overflow
  net: dpaa: Fix dtsec check for PCS availability
  octeontx2-pf: Fix lmtst ID used in aura free
  drivers/net/bonding/bond_3ad: return when there's no aggregator
  netfilter: ipset: Rework long task execution when adding/deleting entries
  netfilter: ipset: fix hash:net,port,net hang with /0 subnet
  net: sparx5: Fix reading of the MAC address
  vxlan: Fix memory leaks in error path
  net: sched: htb: fix htb_classify() kernel-doc
  net: sched: cbq: dont intepret cls results when asked to drop
  net: sched: atm: dont intepret cls results when asked to drop
  dt-bindings: net: marvell,orion-mdio: Fix examples
  dt-bindings: net: sun8i-emac: Add phy-supply property
  net: ipa: use proper endpoint mask for suspend
  selftests: net: return non-zero for failures reported in arp_ndisc_evict_nocarrier
  ...

16 months agoriscv: uaccess: fix type of 0 variable on error in get_user()
Ben Dooks [Thu, 29 Dec 2022 17:05:45 +0000 (17:05 +0000)]
riscv: uaccess: fix type of 0 variable on error in get_user()

If the get_user(x, ptr) has x as a pointer, then the setting
of (x) = 0 is going to produce the following sparse warning,
so fix this by forcing the type of 'x' when access_ok() fails.

fs/aio.c:2073:21: warning: Using plain integer as NULL pointer

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20221229170545.718264-1-ben-linux@fluff.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
16 months agoriscv, kprobes: Stricter c.jr/c.jalr decoding
Björn Töpel [Mon, 2 Jan 2023 16:07:48 +0000 (17:07 +0100)]
riscv, kprobes: Stricter c.jr/c.jalr decoding

In the compressed instruction extension, c.jr, c.jalr, c.mv, and c.add
is encoded the following way (each instruction is 16b):

---+-+-----------+-----------+--
100 0 rs1[4:0]!=0       00000 10 : c.jr
100 1 rs1[4:0]!=0       00000 10 : c.jalr
100 0  rd[4:0]!=0 rs2[4:0]!=0 10 : c.mv
100 1  rd[4:0]!=0 rs2[4:0]!=0 10 : c.add

The following logic is used to decode c.jr and c.jalr:

  insn & 0xf007 == 0x8002 => instruction is an c.jr
  insn & 0xf007 == 0x9002 => instruction is an c.jalr

When 0xf007 is used to mask the instruction, c.mv can be incorrectly
decoded as c.jr, and c.add as c.jalr.

Correct the decoding by changing the mask from 0xf007 to 0xf07f.

Fixes: c22b0bcb1dd0 ("riscv: Add kprobes supported")
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20230102160748.1307289-1-bjorn@kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
16 months agoMerge tag 'gpio-fixes-for-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 5 Jan 2023 20:06:40 +0000 (12:06 -0800)]
Merge tag 'gpio-fixes-for-v6.2-rc3' of git://git./linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:
 "A reference leak fix, two fixes for using uninitialized variables and
  more drivers converted to using immutable irqchips:

   - fix a reference leak in gpio-sifive

   - fix a potential use of an uninitialized variable in core gpiolib

   - fix a potential use of an uninitialized variable in gpio-pca953x

   - make GPIO irqchips immutable in gpio-pmic-eic-sprd, gpio-eic-sprd
     and gpio-sprd"

* tag 'gpio-fixes-for-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: sifive: Fix refcount leak in sifive_gpio_probe
  gpio: sprd: Make the irqchip immutable
  gpio: pmic-eic-sprd: Make the irqchip immutable
  gpio: eic-sprd: Make the irqchip immutable
  gpio: pca953x: avoid to use uninitialized value pinctrl
  gpiolib: Fix using uninitialized lookup-flags on ACPI platforms

16 months agolib/scatterlist: Fix to merge contiguous pages into the last SG properly
Yishai Hadas [Thu, 5 Jan 2023 11:23:39 +0000 (13:23 +0200)]
lib/scatterlist: Fix to merge contiguous pages into the last SG properly

When sg_alloc_append_table_from_pages() calls to pages_are_mergeable() in
its 'sgt_append->prv' flow to check whether it can merge contiguous pages
into the last SG, it passes the page arguments in the wrong order.

The first parameter should be the next candidate page to be merged to
the last page and not the opposite.

The current code leads to a corrupted SG which resulted in OOPs and
unexpected errors when non-contiguous pages are merged wrongly.

Fix to pass the page parameters in the right order.

Fixes: 1567b49d1a40 ("lib/scatterlist: add check when merging zone device pages")
Link: https://lore.kernel.org/r/20230105112339.107969-1-yishaih@nvidia.com
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
16 months agoMerge tag 'fbdev-for-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Thu, 5 Jan 2023 19:24:33 +0000 (11:24 -0800)]
Merge tag 'fbdev-for-6.2-rc3' of git://git./linux/kernel/git/deller/linux-fbdev

Pull fbdev fixes from Helge Deller:

 - Fix Matrox G200eW initialization failure

 - Fix build failure of offb driver when built as module

 - Optimize stack usage in omapfb

* tag 'fbdev-for-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbdev: omapfb: avoid stack overflow warning
  fbdev: matroxfb: G200eW: Increase max memory from 1 MB to 16 MB
  fbdev: atyfb: use strscpy() to instead of strncpy()
  fbdev: omapfb: use strscpy() to instead of strncpy()
  fbdev: make offb driver tristate

16 months agoblock: Remove "select SRCU" block-2023-01-06
Paul E. McKenney [Thu, 5 Jan 2023 00:37:53 +0000 (16:37 -0800)]
block: Remove "select SRCU"

Now that the SRCU Kconfig option is unconditionally selected, there is
no longer any point in selecting it.  Therefore, remove the "select SRCU"
Kconfig statements.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
16 months agoio_uring: fix CQ waiting timeout handling io_uring-2023-01-06
Pavel Begunkov [Thu, 5 Jan 2023 10:49:15 +0000 (10:49 +0000)]
io_uring: fix CQ waiting timeout handling

Jiffy to ktime CQ waiting conversion broke how we treat timeouts, in
particular we rearm it anew every time we get into
io_cqring_wait_schedule() without adjusting the timeout. Waiting for 2
CQEs and getting a task_work in the middle may double the timeout value,
or even worse in some cases task may wait indefinitely.

Cc: stable@vger.kernel.org
Fixes: 228339662b398 ("io_uring: don't convert to jiffies for waiting on timeouts")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/f7bffddd71b08f28a877d44d37ac953ddb01590d.1672915663.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
16 months agopowerpc/vmlinux.lds: Don't discard .comment
Michael Ellerman [Thu, 5 Jan 2023 11:42:59 +0000 (22:42 +1100)]
powerpc/vmlinux.lds: Don't discard .comment

Although the powerpc linker script mentions .comment in the DISCARD
section, that has never actually caused it to be discarded, because the
earlier ELF_DETAILS macro (previously STABS_DEBUG) explicitly includes
.comment.

However commit 99cb0d917ffa ("arch: fix broken BuildID for arm64 and
riscv") introduced an earlier use of DISCARD as part of the RO_DATA
macro. With binutils < 2.36 that causes the DISCARD directives later in
the script to be applied earlier, causing .comment to actually be
discarded.

It's confusing to explicitly include and discard .comment, and even more
so if the behaviour depends on the toolchain version. So don't discard
.comment in order to maintain the existing behaviour in all cases.

Fixes: 83a092cf95f2 ("powerpc: Link warning for orphan sections")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230105132349.384666-3-mpe@ellerman.id.au
16 months agopowerpc/vmlinux.lds: Don't discard .rela* for relocatable builds
Michael Ellerman [Thu, 5 Jan 2023 11:28:36 +0000 (22:28 +1100)]
powerpc/vmlinux.lds: Don't discard .rela* for relocatable builds

Relocatable kernels must not discard relocations, they need to be
processed at runtime. As such they are included for CONFIG_RELOCATABLE
builds in the powerpc linker script (line 340).

However they are also unconditionally discarded later in the
script (line 414). Previously that worked because the earlier inclusion
superseded the discard.

However commit 99cb0d917ffa ("arch: fix broken BuildID for arm64 and
riscv") introduced an earlier use of DISCARD as part of the RO_DATA
macro (line 137). With binutils < 2.36 that causes the DISCARD
directives later in the script to be applied earlier, causing .rela* to
actually be discarded at link time, leading to build warnings and a
kernel that doesn't boot:

  ld: warning: discarding dynamic section .rela.init.rodata

Fix it by conditionally discarding .rela* only when CONFIG_RELOCATABLE
is disabled.

Fixes: 99cb0d917ffa ("arch: fix broken BuildID for arm64 and riscv")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230105132349.384666-2-mpe@ellerman.id.au
16 months agopowerpc/vmlinux.lds: Define RUNTIME_DISCARD_EXIT
Michael Ellerman [Thu, 5 Jan 2023 11:05:04 +0000 (22:05 +1100)]
powerpc/vmlinux.lds: Define RUNTIME_DISCARD_EXIT

The powerpc linker script explicitly includes .exit.text, because
otherwise the link fails due to references from __bug_table and
__ex_table. The code is freed (discarded) at runtime along with
.init.text and data.

That has worked in the past despite powerpc not defining
RUNTIME_DISCARD_EXIT because DISCARDS appears late in the powerpc linker
script (line 410), and the explicit inclusion of .exit.text
earlier (line 280) supersedes the discard.

However commit 99cb0d917ffa ("arch: fix broken BuildID for arm64 and
riscv") introduced an earlier use of DISCARD as part of the RO_DATA
macro (line 136). With binutils < 2.36 that causes the DISCARD
directives later in the script to be applied earlier [1], causing
.exit.text to actually be discarded at link time, leading to build
errors:

  '.exit.text' referenced in section '__bug_table' of crypto/algboss.o: defined in
  discarded section '.exit.text' of crypto/algboss.o
  '.exit.text' referenced in section '__ex_table' of drivers/nvdimm/core.o: defined in
  discarded section '.exit.text' of drivers/nvdimm/core.o

Fix it by defining RUNTIME_DISCARD_EXIT, which causes the generic
DISCARDS macro to not include .exit.text at all.

1: https://lore.kernel.org/lkml/87fscp2v7k.fsf@igel.home/

Fixes: 99cb0d917ffa ("arch: fix broken BuildID for arm64 and riscv")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230105132349.384666-1-mpe@ellerman.id.au
16 months agoMerge tag 'gvt-fixes-2023-01-05' of https://github.com/intel/gvt-linux into drm-intel...
Rodrigo Vivi [Thu, 5 Jan 2023 13:03:38 +0000 (08:03 -0500)]
Merge tag 'gvt-fixes-2023-01-05' of https://github.com/intel/gvt-linux into drm-intel-fixes

gvt-fixes-2023-01-05

- Fix one missed unpin in error of intel_vgpu_shadow_mm_pin()
- Fix two debugfs destroy oops issues for vgpu and gvt entries
- Fix one potential double free issue in gtt shadow pt code
- Fix to use atomic bit flag for vgpu status

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Y7YWoFpz4plnSLCd@zhen-hp.sh.intel.com
16 months agoMerge tag 'amd-drm-fixes-6.2-2023-01-04' of https://gitlab.freedesktop.org/agd5f...
Daniel Vetter [Thu, 5 Jan 2023 11:13:51 +0000 (12:13 +0100)]
Merge tag 'amd-drm-fixes-6.2-2023-01-04' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-6.2-2023-01-04:

amdgpu:
- DCN 3.2 fix
- Display fix

amdkfd:
- Fix kernel warning

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230105033839.23711-1-alexander.deucher@amd.com
16 months agofbdev: omapfb: avoid stack overflow warning
Arnd Bergmann [Thu, 15 Dec 2022 17:02:28 +0000 (18:02 +0100)]
fbdev: omapfb: avoid stack overflow warning

The dsi_irq_stats structure is a little too big to fit on the
stack of a 32-bit task, depending on the specific gcc options:

fbdev/omap2/omapfb/dss/dsi.c: In function 'dsi_dump_dsidev_irqs':
fbdev/omap2/omapfb/dss/dsi.c:1621:1: error: the frame size of 1064 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]

Since this is only a debugfs file, performance is not critical,
so just dynamically allocate it, and print an error message
in there in place of a failure code when the allocation fails.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Helge Deller <deller@gmx.de>
16 months agocaif: fix memory leak in cfctrl_linkup_request()
Zhengchao Shao [Wed, 4 Jan 2023 06:51:46 +0000 (14:51 +0800)]
caif: fix memory leak in cfctrl_linkup_request()

When linktype is unknown or kzalloc failed in cfctrl_linkup_request(),
pkt is not released. Add release process to error path.

Fixes: b482cd2053e3 ("net-caif: add CAIF core protocol stack")
Fixes: 8d545c8f958f ("caif: Disconnect without waiting for response")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20230104065146.1153009-1-shaozhengchao@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agoMerge tag 'drm-misc-fixes-2023-01-05' of git://anongit.freedesktop.org/drm/drm-misc...
Daniel Vetter [Thu, 5 Jan 2023 08:43:36 +0000 (09:43 +0100)]
Merge tag 'drm-misc-fixes-2023-01-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Several fixes to fix the error path of dma_buf_export, add a missing
structure declaration resulting in a compiler warning, fix the GEM
handle refcounting in panfrost, fix a corrupted image with AFBC on
meson, a memleak in virtio, improper plane width for imx, and a lockup
in drm_sched_entity_kill()

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20230105074909.qd2h23hpxac4lxi7@houat
16 months agokbuild: readd -w option when vmlinux.o or Module.symver is missing
Masahiro Yamada [Wed, 4 Jan 2023 14:04:59 +0000 (23:04 +0900)]
kbuild: readd -w option when vmlinux.o or Module.symver is missing

Commit 63ffe00d8c93 ("kbuild: Fix running modpost with musl libc")
accidentally turned the unresolved symbol warnings into errors when
vmlinux.o (for in-tree builds) or Module.symver (for external module
builds) is missing.

In those cases, unresolved symbols are expected, but the -w option
is not set because 'missing-input' is referenced before set.

Move $(missing-input) back to the original place. This should be fine
for musl libc because vmlinux.o and -w are not added at the same time.

With this change, -w may be passed twice, but it is not a big deal.

Link: https://lore.kernel.org/all/b56a03b8-2a2a-f833-a5d2-cdc50a7ca2bb@cschramm.eu/
Fixes: 63ffe00d8c93 ("kbuild: Fix running modpost with musl libc")
Reported-by: Christopher Schramm <debian@cschramm.eu>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Samuel Holland <samuel@sholland.org>
16 months agokbuild: fix single *.ko build
Masahiro Yamada [Sun, 1 Jan 2023 06:07:09 +0000 (15:07 +0900)]
kbuild: fix single *.ko build

The single *.ko build is broken since commit f65a486821cf ("kbuild:
change module.order to list *.o instead of *.ko").

Fixes: f65a486821cf ("kbuild: change module.order to list *.o instead of *.ko")
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocifs: fix interface count calculation during refresh
Shyam Prasad N [Thu, 22 Dec 2022 12:54:44 +0000 (12:54 +0000)]
cifs: fix interface count calculation during refresh

The last fix to iface_count did fix the overcounting issue.
However, during each refresh, we could end up undercounting
the iface_count, if a match was found.

Fixing this by doing increments and decrements instead of
setting it to 0 before each parsing of server interfaces.

Fixes: 096bbeec7bd6 ("smb3: interface count displayed incorrectly")
Cc: stable@vger.kernel.org # 6.1
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
16 months agocifs: refcount only the selected iface during interface update
Shyam Prasad N [Tue, 27 Dec 2022 11:29:28 +0000 (11:29 +0000)]
cifs: refcount only the selected iface during interface update

When the server interface for a channel is not active anymore,
we have the logic to select an alternative interface. However
this was not breaking out of the loop as soon as a new alternative
was found. As a result, some interfaces may get refcounted unintentionally.

There was also a bug in checking if we found an alternate iface.
Fixed that too.

Fixes: b54034a73baf ("cifs: during reconnect, update interface if necessary")
Cc: stable@vger.kernel.org # 5.19+
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
16 months agoinet: control sockets should not use current thread task_frag
Eric Dumazet [Tue, 3 Jan 2023 19:27:36 +0000 (19:27 +0000)]
inet: control sockets should not use current thread task_frag

Because ICMP handlers run from softirq contexts,
they must not use current thread task_frag.

Previously, all sockets allocated by inet_ctl_sock_create()
would use the per-socket page fragment, with no chance of
recursion.

Fixes: 98123866fcf3 ("Treewide: Stop corrupting socket's task_frag")
Reported-by: syzbot+bebc6f1acdf4cbb79b03@syzkaller.appspotmail.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Benjamin Coddington <bcodding@redhat.com>
Acked-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/20230103192736.454149-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet/ulp: prevent ULP without clone op from entering the LISTEN status
Paolo Abeni [Tue, 3 Jan 2023 11:19:17 +0000 (12:19 +0100)]
net/ulp: prevent ULP without clone op from entering the LISTEN status

When an ULP-enabled socket enters the LISTEN status, the listener ULP data
pointer is copied inside the child/accepted sockets by sk_clone_lock().

The relevant ULP can take care of de-duplicating the context pointer via
the clone() operation, but only MPTCP and SMC implement such op.

Other ULPs may end-up with a double-free at socket disposal time.

We can't simply clear the ULP data at clone time, as TLS replaces the
socket ops with custom ones assuming a valid TLS ULP context is
available.

Instead completely prevent clone-less ULP sockets from entering the
LISTEN status.

Fixes: 734942cc4ea6 ("tcp: ULP infrastructure")
Reported-by: slipper <slipper.alive@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/4b80c3d1dbe3d0ab072f80450c202d9bc88b4b03.1672740602.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoqed: allow sleep in qed_mcp_trace_dump()
Caleb Sander [Tue, 3 Jan 2023 23:30:21 +0000 (16:30 -0700)]
qed: allow sleep in qed_mcp_trace_dump()

By default, qed_mcp_cmd_and_union() delays 10us at a time in a loop
that can run 500K times, so calls to qed_mcp_nvm_rd_cmd()
may block the current thread for over 5s.
We observed thread scheduling delays over 700ms in production,
with stacktraces pointing to this code as the culprit.

qed_mcp_trace_dump() is called from ethtool, so sleeping is permitted.
It already can sleep in qed_mcp_halt(), which calls qed_mcp_cmd().
Add a "can sleep" parameter to qed_find_nvram_image() and
qed_nvram_read() so they can sleep during qed_mcp_trace_dump().
qed_mcp_trace_get_meta_info() and qed_mcp_trace_read_meta(),
called only by qed_mcp_trace_dump(), allow these functions to sleep.
I can't tell if the other caller (qed_grc_dump_mcp_hw_dump()) can sleep,
so keep b_can_sleep set to false when it calls these functions.

An example stacktrace from a custom warning we added to the kernel
showing a thread that has not scheduled despite long needing resched:
[ 2745.362925,17] ------------[ cut here ]------------
[ 2745.362941,17] WARNING: CPU: 23 PID: 5640 at arch/x86/kernel/irq.c:233 do_IRQ+0x15e/0x1a0()
[ 2745.362946,17] Thread not rescheduled for 744 ms after irq 99
[ 2745.362956,17] Modules linked in: ...
[ 2745.363339,17] CPU: 23 PID: 5640 Comm: lldpd Tainted: P           O    4.4.182+ #202104120910+6d1da174272d.61x
[ 2745.363343,17] Hardware name: FOXCONN MercuryB/Quicksilver Controller, BIOS H11P1N09 07/08/2020
[ 2745.363346,17]  0000000000000000 ffff885ec07c3ed8 ffffffff8131eb2f ffff885ec07c3f20
[ 2745.363358,17]  ffffffff81d14f64 ffff885ec07c3f10 ffffffff81072ac2 ffff88be98ed0000
[ 2745.363369,17]  0000000000000063 0000000000000174 0000000000000074 0000000000000000
[ 2745.363379,17] Call Trace:
[ 2745.363382,17]  <IRQ>  [<ffffffff8131eb2f>] dump_stack+0x8e/0xcf
[ 2745.363393,17]  [<ffffffff81072ac2>] warn_slowpath_common+0x82/0xc0
[ 2745.363398,17]  [<ffffffff81072b4c>] warn_slowpath_fmt+0x4c/0x50
[ 2745.363404,17]  [<ffffffff810d5a8e>] ? rcu_irq_exit+0xae/0xc0
[ 2745.363408,17]  [<ffffffff817c99fe>] do_IRQ+0x15e/0x1a0
[ 2745.363413,17]  [<ffffffff817c7ac9>] common_interrupt+0x89/0x89
[ 2745.363416,17]  <EOI>  [<ffffffff8132aa74>] ? delay_tsc+0x24/0x50
[ 2745.363425,17]  [<ffffffff8132aa04>] __udelay+0x34/0x40
[ 2745.363457,17]  [<ffffffffa04d45ff>] qed_mcp_cmd_and_union+0x36f/0x7d0 [qed]
[ 2745.363473,17]  [<ffffffffa04d5ced>] qed_mcp_nvm_rd_cmd+0x4d/0x90 [qed]
[ 2745.363490,17]  [<ffffffffa04e1dc7>] qed_mcp_trace_dump+0x4a7/0x630 [qed]
[ 2745.363504,17]  [<ffffffffa04e2556>] ? qed_fw_asserts_dump+0x1d6/0x1f0 [qed]
[ 2745.363520,17]  [<ffffffffa04e4ea7>] qed_dbg_mcp_trace_get_dump_buf_size+0x37/0x80 [qed]
[ 2745.363536,17]  [<ffffffffa04ea881>] qed_dbg_feature_size+0x61/0xa0 [qed]
[ 2745.363551,17]  [<ffffffffa04eb427>] qed_dbg_all_data_size+0x247/0x260 [qed]
[ 2745.363560,17]  [<ffffffffa0482c10>] qede_get_regs_len+0x30/0x40 [qede]
[ 2745.363566,17]  [<ffffffff816c9783>] ethtool_get_drvinfo+0xe3/0x190
[ 2745.363570,17]  [<ffffffff816cc152>] dev_ethtool+0x1362/0x2140
[ 2745.363575,17]  [<ffffffff8109bcc6>] ? finish_task_switch+0x76/0x260
[ 2745.363580,17]  [<ffffffff817c2116>] ? __schedule+0x3c6/0x9d0
[ 2745.363585,17]  [<ffffffff810dbd50>] ? hrtimer_start_range_ns+0x1d0/0x370
[ 2745.363589,17]  [<ffffffff816c1e5b>] ? dev_get_by_name_rcu+0x6b/0x90
[ 2745.363594,17]  [<ffffffff816de6a8>] dev_ioctl+0xe8/0x710
[ 2745.363599,17]  [<ffffffff816a58a8>] sock_do_ioctl+0x48/0x60
[ 2745.363603,17]  [<ffffffff816a5d87>] sock_ioctl+0x1c7/0x280
[ 2745.363608,17]  [<ffffffff8111f393>] ? seccomp_phase1+0x83/0x220
[ 2745.363612,17]  [<ffffffff811e3503>] do_vfs_ioctl+0x2b3/0x4e0
[ 2745.363616,17]  [<ffffffff811e3771>] SyS_ioctl+0x41/0x70
[ 2745.363619,17]  [<ffffffff817c6ffe>] entry_SYSCALL_64_fastpath+0x1e/0x79
[ 2745.363622,17] ---[ end trace f6954aa440266421 ]---

Fixes: c965db4446291 ("qed: Add support for debug data collection")
Signed-off-by: Caleb Sander <csander@purestorage.com>
Acked-by: Alok Prasad <palok@marvell.com>
Link: https://lore.kernel.org/r/20230103233021.1457646-1-csander@purestorage.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Jakub Kicinski [Thu, 5 Jan 2023 04:17:19 +0000 (20:17 -0800)]
Merge tag 'for-netdev' of https://git./linux/kernel/git/bpf/bpf

Alexei Starovoitov says:

====================
bpf 2023-01-04

We've added 5 non-merge commits during the last 8 day(s) which contain
a total of 5 files changed, 112 insertions(+), 18 deletions(-).

The main changes are:

1) Always use maximal size for copy_array in the verifier to fix
   KASAN tracking, from Kees.

2) Fix bpf task iterator walking through dead tasks, from Kui-Feng.

3) Make sure livepatch and bpf fexit can coexist, from Chuang.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Always use maximal size for copy_array()
  selftests/bpf: add a test for iter/task_vma for short-lived processes
  bpf: keep a reference to the mm, in case the task is dead.
  selftests/bpf: Temporarily disable part of btf_dump:var_data test.
  bpf: Fix panic due to wrong pageattr of im->image
====================

Link: https://lore.kernel.org/r/20230104215500.79435-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoof: fdt: Honor CONFIG_CMDLINE* even without /chosen node, take 2
Rob Herring [Tue, 3 Jan 2023 18:00:32 +0000 (12:00 -0600)]
of: fdt: Honor CONFIG_CMDLINE* even without /chosen node, take 2

I do not read a strict requirement on /chosen node in either ePAPR or in
Documentation/devicetree. Help text for CONFIG_CMDLINE and
CONFIG_CMDLINE_EXTEND doesn't make their behavior explicitly dependent on
the presence of /chosen or the presense of /chosen/bootargs.

However the early check for /chosen and bailing out in
early_init_dt_scan_chosen() skips CONFIG_CMDLINE handling which is not
really related to /chosen node or the particular method of passing cmdline
from bootloader.

This leads to counterintuitive combinations (assuming
CONFIG_CMDLINE_EXTEND=y):

a) bootargs="foo", CONFIG_CMDLINE="bar" => cmdline=="foo bar"
b) /chosen missing, CONFIG_CMDLINE="bar" => cmdline==""
c) bootargs="", CONFIG_CMDLINE="bar" => cmdline==" bar"

Rework early_init_dt_scan_chosen() so that the cmdline config options are
always handled.

[commit msg written by Alexander Sverdlin]

Cc: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Tested-by: Geoff Levand <geoff@infradead.org>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Link: https://lore.kernel.org/r/20230103-dt-cmdline-fix-v1-2-7038e88b18b6@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
16 months agoRevert "of: fdt: Honor CONFIG_CMDLINE* even without /chosen node"
Rob Herring [Tue, 3 Jan 2023 18:00:31 +0000 (12:00 -0600)]
Revert "of: fdt: Honor CONFIG_CMDLINE* even without /chosen node"

This reverts commit a7d550f82b445cf218b47a2c1a9c56e97ecb8c7a.

Some arches (PPC at least) don't call early_init_dt_scan_nodes(), so
moving the cmdline processing there breaks them.

Reported-by: Geoff Levand <geoff@infradead.org>
Cc: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Tested-by: Geoff Levand <geoff@infradead.org>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Link: https://lore.kernel.org/r/20230103-dt-cmdline-fix-v1-1-7038e88b18b6@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
16 months agoRevert "drm/amd/display: Enable Freesync Video Mode by default"
Michel Dänzer [Wed, 21 Dec 2022 15:24:13 +0000 (16:24 +0100)]
Revert "drm/amd/display: Enable Freesync Video Mode by default"

This reverts commit de05abe6b9d0fe08f65d744f7f75a4cba4df27ad.

The bug referenced below was bisected to this commit. There has been no
activity toward fixing it in 3 months, so let's revert for now.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2162
Signed-off-by: Michel Dänzer <mdaenzer@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
16 months agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Thu, 5 Jan 2023 01:13:53 +0000 (17:13 -0800)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Mostly fixes all over the place, a couple of cleanups"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (32 commits)
  virtio_blk: Fix signedness bug in virtblk_prep_rq()
  vdpa_sim_net: should not drop the multicast/broadcast packet
  vdpasim: fix memory leak when freeing IOTLBs
  vdpa: conditionally fill max max queue pair for stats
  vdpa/vp_vdpa: fix kfree a wrong pointer in vp_vdpa_remove
  vduse: Validate vq_num in vduse_validate_config()
  tools/virtio: remove smp_read_barrier_depends()
  tools/virtio: remove stray characters
  vhost_vdpa: fix the crash in unmap a large memory
  virtio: Implementing attribute show with sysfs_emit
  virtio-crypto: fix memory leak in virtio_crypto_alg_skcipher_close_session()
  tools/virtio: Variable type completion
  vdpa_sim: fix vringh initialization in vdpasim_queue_ready()
  virtio_blk: use UINT_MAX instead of -1U
  vhost-vdpa: fix an iotlb memory leak
  vhost: fix range used in translate_desc()
  vringh: fix range used in iotlb_translate()
  vhost/vsock: Fix error handling in vhost_vsock_init()
  vdpa_sim: fix possible memory leak in vdpasim_net_init() and vdpasim_blk_init()
  tools: Delete the unneeded semicolon after curly braces
  ...

16 months agoRevert "pktcdvd: remove driver."
Jens Axboe [Wed, 4 Jan 2023 21:44:13 +0000 (14:44 -0700)]
Revert "pktcdvd: remove driver."

This reverts commit f40eb99897af665f11858dd7b56edcb62c3f3c67.

There are apparently still users out there of this driver. While we'd
love to remove it to ease the maintenance burden, let's reinstate it
for now until better (userspace) solutions can be developed.

Link: https://lore.kernel.org/lkml/20230104190115.ceglfefco475ev6c@pali/
Reported-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
16 months agoRevert "block: remove devnode callback from struct block_device_operations"
Jens Axboe [Wed, 4 Jan 2023 21:44:02 +0000 (14:44 -0700)]
Revert "block: remove devnode callback from struct block_device_operations"

This reverts commit 85d6ce58e493ac8b7122e2fbe3f41b94d6ebdc11.

We're reinstating the pktcdvd driver, which needs this API.

Signed-off-by: Jens Axboe <axboe@kernel.dk>