iio: mxs-lradc: only update the buffer when its conversions have finished

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commit 89bb35e200 upstream.

Using the touchscreen while running buffered capture results in the
buffer reporting lots of wrong values, often just zeros. This is because
we push readings to the buffer every time a touchscreen interrupt
arrives, including when the buffer's own conversions have not yet
finished. So let's only push to the buffer when its conversions are
ready.

Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

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Kristina Martšenko 2015-01-25 18:28:22 +02:00 • committed by Sasha Levin

parent 9f074c6a2d

commit 30fa0dbf67

1 changed files with 5 additions and 3 deletions

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drivers/staging/iio/adc/mxs-lradc.c

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