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iio: adc: stm32-adc: harden against NULL pointer deref in stm32_adc_probe()
authorZhang Shurong <zhang_shurong@foxmail.com>
Sat, 15 Jul 2023 15:55:50 +0000 (23:55 +0800)
committerJonathan Cameron <jonathan.cameron@huawei.com>
Tue, 12 Sep 2023 09:42:03 +0000 (10:42 +0100)
commit3a23b384e7e3d64d5587ad10729a34d4f761517e
treeb6ca6c21aa166c3c3026d753b42c3cebd29f9ab8tree | snapshot
parent8f6bc87d67c0309a98546d933bfefd2837154c8ecommit | diff
iio: adc: stm32-adc: harden against NULL pointer deref in stm32_adc_probe()

of_match_device() may fail and returns a NULL pointer.

In practice there is no known reasonable way to trigger this, but
in case one is added in future, harden the code by adding the check

Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Link: https://lore.kernel.org/r/tencent_994DA85912C937E3B5405BA960B31ED90A08@qq.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
drivers/iio/adc/stm32-adc-core.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git