mfd: sec-core: Fix possible NULL pointer dereference when i2c_new_dummy error

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commit 65aba1e049 upstream.

During probe the sec-core driver allocates dummy I2C device for RTC with
i2c_new_dummy() but return value is not checked. 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
devm_regmap_init_i2c() or i2c_unregister_device().

If i2c_new_dummy() fails for RTC device, fail also the probe for main
MFD driver.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Krzysztof Kozlowski 2014-02-11 10:12:25 +01:00 • committed by Greg Kroah-Hartman

parent 360fec6392

commit 045d75e643

1 changed files with 4 additions and 0 deletions

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drivers/mfd/sec-core.c

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