From 2869da8587604e3fea5f85aeade486a08e8313bf Mon Sep 17 00:00:00 2001 From: Inaky Perez-Gonzalez Date: Wed, 16 Sep 2009 18:33:26 -0700 Subject: [PATCH] wimax/i2400m: do bootmode buffer management in i2400m_setup/release() After the introduction of i2400m->bus_setup/release, there is no more race condition where the bootmode buffers are needed before i2400m_setup() is called. Before, the SDIO driver would setup RX before calling i2400m_setup() and thus need those buffers; now RX setup is done in i2400m->bus_setup(), which is called by i2400m_setup(). Thus, all the bootmode buffer management can now be done completely inside i2400m_setup()/i2400m_release(), removing complexity from the bus-specific drivers. Signed-off-by: Inaky Perez-Gonzalez --- drivers/net/wimax/i2400m/driver.c | 28 +++++++++++++++++----------- drivers/net/wimax/i2400m/i2400m.h | 2 -- drivers/net/wimax/i2400m/sdio.c | 14 -------------- drivers/net/wimax/i2400m/usb.c | 8 -------- 4 files changed, 17 insertions(+), 35 deletions(-) diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c index c57020f811cd..4fcdb18261fd 100644 --- a/drivers/net/wimax/i2400m/driver.c +++ b/drivers/net/wimax/i2400m/driver.c @@ -723,12 +723,13 @@ int i2400m_dev_reset_handle(struct i2400m *i2400m, const char *reason) EXPORT_SYMBOL_GPL(i2400m_dev_reset_handle); -/** - * i2400m_bm_buf_alloc - Alloc the command and ack buffers for boot mode +/* + * Alloc the command and ack buffers for boot mode * * Get the buffers needed to deal with boot mode messages. These * buffers need to be allocated before the sdio recieve irq is setup. */ +static int i2400m_bm_buf_alloc(struct i2400m *i2400m) { int result; @@ -747,22 +748,19 @@ error_bm_ack_buf_kzalloc: error_bm_cmd_kzalloc: return result; } -EXPORT_SYMBOL_GPL(i2400m_bm_buf_alloc); -/** - * i2400m_bm_buf_free - Free boot mode command and ack buffers. - * - * Free the command and ack buffers - * + +/* + * Free boot mode command and ack buffers. */ +static void i2400m_bm_buf_free(struct i2400m *i2400m) { kfree(i2400m->bm_ack_buf); kfree(i2400m->bm_cmd_buf); - return; } -EXPORT_SYMBOL_GPL(i2400m_bm_buf_free -); + + /** * i2400m_setup - bus-generic setup function for the i2400m device * @@ -786,6 +784,12 @@ int i2400m_setup(struct i2400m *i2400m, enum i2400m_bri bm_flags) snprintf(wimax_dev->name, sizeof(wimax_dev->name), "i2400m-%s:%s", dev->bus->name, dev_name(dev)); + result = i2400m_bm_buf_alloc(i2400m); + if (result < 0) { + dev_err(dev, "cannot allocate bootmode scratch buffers\n"); + goto error_bm_buf_alloc; + } + if (i2400m->bus_setup) { result = i2400m->bus_setup(i2400m); if (result < 0) { @@ -860,6 +864,8 @@ error_bootrom_init: if (i2400m->bus_release) i2400m->bus_release(i2400m); error_bus_setup: + i2400m_bm_buf_free(i2400m); +error_bm_buf_alloc: d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result); return result; } diff --git a/drivers/net/wimax/i2400m/i2400m.h b/drivers/net/wimax/i2400m/i2400m.h index 407d0972f2f6..1724955e0fe9 100644 --- a/drivers/net/wimax/i2400m/i2400m.h +++ b/drivers/net/wimax/i2400m/i2400m.h @@ -817,8 +817,6 @@ void i2400m_put(struct i2400m *i2400m) } extern int i2400m_dev_reset_handle(struct i2400m *, const char *); -extern int i2400m_bm_buf_alloc(struct i2400m *i2400m); -extern void i2400m_bm_buf_free(struct i2400m *i2400m); /* * _setup()/_release() are called by the probe/disconnect functions of diff --git a/drivers/net/wimax/i2400m/sdio.c b/drivers/net/wimax/i2400m/sdio.c index 6e39665ecd89..14e66f06f235 100644 --- a/drivers/net/wimax/i2400m/sdio.c +++ b/drivers/net/wimax/i2400m/sdio.c @@ -519,18 +519,6 @@ int i2400ms_probe(struct sdio_func *func, i2400m->bus_bm_mac_addr_impaired = 1; i2400m->bus_bm_pokes_table = &i2400ms_pokes[0]; - /* - * Before we are enabling the device interrupt register, make - * sure the buffer used during bootmode operation is setup so - * when the first D2H data interrupt comes, the memory is - * available for copying the D2H data. - */ - result = i2400m_bm_buf_alloc(i2400m); - if (result < 0) { - dev_err(dev, "cannot allocate SDIO bootmode buffer\n"); - goto error_bootmode_buf_setup; - } - result = i2400m_setup(i2400m, I2400M_BRI_NO_REBOOT); if (result < 0) { dev_err(dev, "cannot setup device: %d\n", result); @@ -548,8 +536,6 @@ int i2400ms_probe(struct sdio_func *func, error_debugfs_add: i2400m_release(i2400m); error_setup: - i2400m_bm_buf_free(i2400m); -error_bootmode_buf_setup: sdio_set_drvdata(func, NULL); free_netdev(net_dev); error_alloc_netdev: diff --git a/drivers/net/wimax/i2400m/usb.c b/drivers/net/wimax/i2400m/usb.c index 3bf3f7288fe6..77567970fe9a 100644 --- a/drivers/net/wimax/i2400m/usb.c +++ b/drivers/net/wimax/i2400m/usb.c @@ -447,12 +447,6 @@ int i2400mu_probe(struct usb_interface *iface, usb_dev->autosuspend_disabled = 0; #endif - result = i2400m_bm_buf_alloc(i2400m); - if (result < 0) { - dev_err(dev, "cannot allocate USB bootmode buffer\n"); - goto error_bm_buf_alloc; - } - result = i2400m_setup(i2400m, I2400M_BRI_MAC_REINIT); if (result < 0) { dev_err(dev, "cannot setup device: %d\n", result); @@ -468,8 +462,6 @@ int i2400mu_probe(struct usb_interface *iface, error_debugfs_add: i2400m_release(i2400m); error_setup: - i2400m_bm_buf_free(i2400m); -error_bm_buf_alloc: usb_set_intfdata(iface, NULL); usb_put_dev(i2400mu->usb_dev); free_netdev(net_dev); -- 2.25.1