mfd: 88pm860x: Fix possible NULL pointer dereference on i2c_new_dummy error
authorKrzysztof Kozlowski <k.kozlowski@samsung.com>
Tue, 11 Feb 2014 10:03:29 +0000 (11:03 +0100)
committerLee Jones <lee.jones@linaro.org>
Wed, 19 Mar 2014 08:58:11 +0000 (08:58 +0000)
commit159ce52a6b777fc82fa0b51c7440e25f9e4c6feb
tree697943736edb96457807c97e1ae49a46ac181bfa
parenta7ab1c8b261305af583ce26bb4a14f555fdaa73e
mfd: 88pm860x: Fix possible NULL pointer dereference on i2c_new_dummy error

During probe the driver allocates dummy I2C device for companion chip
with i2c_new_dummy() but it does not check the return value of this call.

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 regmap_init_i2c().

If i2c_new_dummy() fails for companion device, 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/88pm860x-core.c