tree e0eeab0ffee918675b10931f3740811d27a89a06
parent ed26f87b9f71693a1d1ee85f5e6209601505080f
author Krzysztof Kozlowski <k.kozlowski@samsung.com> 1392113013 +0100
committer Lee Jones <lee.jones@linaro.org> 1395219490 +0000

mfd: max8925: Fix possible NULL pointer dereference on i2c_new_dummy error

During probe the driver allocates dummy I2C devices for RTC and ADC
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 or ADC 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>