tree 9a1565b8bea3c398d39a9f8783e1e5a161f3f6ed
parent 97dc4ed3fa377ec91bb60ba98b70d645c2099384
author Krzysztof Kozlowski <k.kozlowski@samsung.com> 1392113011 +0100
committer Lee Jones <lee.jones@linaro.org> 1395219489 +0000

mfd: max77686: Fix possible NULL pointer dereference on i2c_new_dummy error

During probe the driver allocates dummy I2C device for RTC 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 i2c_unregister_device().

If i2c_new_dummy() fails for RTC 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>