mfd: max8997: Fix possible NULL pointer dereference on i2c_new_dummy error
authorKrzysztof Kozlowski <k.kozlowski@samsung.com>
Tue, 11 Feb 2014 10:03:34 +0000 (11:03 +0100)
committerLee Jones <lee.jones@linaro.org>
Wed, 19 Mar 2014 08:58:08 +0000 (08:58 +0000)
commit97dc4ed3fa377ec91bb60ba98b70d645c2099384
tree263230d4a648cca58e8e86c253e5642fbe99bb54
parent3c699105d0376c14940ce7cf561754a94cdff8dd
mfd: max8997: Fix possible NULL pointer dereference on i2c_new_dummy error

During probe the driver allocates dummy I2C devices for RTC, haptic and
MUIC with i2c_new_dummy() but it does not check the return value of this
calls.

In case of error (i2c_new_device(): memory allocation failure or I2C
address cannot be used) this function returns NULL which is later used
by i2c_unregister_device().

If i2c_new_dummy() fails for RTC, haptic or MUIC devices, fail also the
probe for main MFD driver.

Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
drivers/mfd/max8997.c