iio: dac: ad5592r: fix unbalanced mutex unlocks in ad5592r_read_raw()
commit 65afb093 upstream. There are 2 exit paths where the lock isn't held, but try to unlock the mutex when exiting. In these places we should just return from the function. A neater approach would be to cleanup the ad5592r_read_raw(), but that would make this patch more difficult to backport to stable versions. Fixes 56ca9db8 : ("iio: dac: Add support for the AD5592R/AD5593R ADCs/DACs") Reported-by:Charles Stanhope <charles.stanhope@gmail.com> Signed-off-by:
Alexandru Ardelean <alexandru.ardelean@analog.com> Cc: <Stable@vger.kernel.org> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by:
Paul Gortmaker <paul.gortmaker@windriver.com>
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5727687b
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