staging: iio: adc: ad7192: use driver private lock to protect hardware state changes

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The IIO subsystem is redefining iio_dev->mlock to be used by
the IIO core only for protecting device operating mode changes.
ie. Changes between INDIO_DIRECT_MODE, INDIO_BUFFER_* modes.

In this driver, mlock was being used to protect hardware state
changes.  Replace it with a driver private lock.

Also, as there are state changes in the ad7192_ write_raw function, a lock
is added to prevent the concurrent state changes.

Signed-off-by: Aastha Gupta <aastha.gupta4104@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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Aastha Gupta 2017-09-27 12:01:59 +05:30 • committed by Jonathan Cameron

parent 103f3afe91

commit 2db82e320d

1 changed files with 7 additions and 2 deletions

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drivers/staging/iio/adc/ad7192.c

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