iio: adc: ad7793: claim direct mode when writing frequency

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Driver was checking for direct mode and trying to lock it, but
left a gap where mode could change before the desired operation.
Use iio_device_claim_direct_mode() to guarantee device stays in
direct mode.

Refactor function to clarify look-up followed by lock sequence.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Alison Schofield 2016-06-01 21:28:14 -07:00 • committed by Jonathan Cameron

parent 7c7e9dad70

commit afa814841c

1 changed files with 13 additions and 19 deletions

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drivers/iio/adc/ad7793.c

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