staging:iio:ad7476: Avoid alloc/free for each sample in buffered mode

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The ad7476 driver has only support for 1 channel ADCs. So the upper limit for
the buffer size is the size of one sample plus the size of the timestamp.
Preallocate a buffer large enough to hold this to avoid having to allocate and
free a new buffer for each sample being captured.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Lars-Peter Clausen 2012-09-10 09:34:00 +01:00 • committed by Jonathan Cameron

parent fcc7800b65

commit 93e33d7030

2 changed files with 7 additions and 12 deletions

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5

drivers/staging/iio/adc/ad7476.h

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14

drivers/staging/iio/adc/ad7476_ring.c

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