iio: adc: ad799x: do not use internal iio_dev lock

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'mlock' was being grabbed when setting the device frequency. In order to
not introduce any functional change a new lock is added. With that in
mind, the lock also needs to be grabbed in the places where 'mlock' is
since it was also being used to protect st->config against the current
device state.

On the other places the lock was being used, we can just drop
it since we are only doing one i2c bus read/write which is already
safe.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-2-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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Nuno Sá 2022-10-04 15:48:54 +02:00 • committed by Jonathan Cameron

parent 3a258747a0

commit 8f347c565d

1 changed files with 14 additions and 6 deletions

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drivers/iio/adc/ad799x.c

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