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iio:kfifo: Set update_needed to false after allocating a new buffer

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update_needed is used to decide whether the kfifo buffer needs to be
re-allocated. It is set to true whenever the size of the buffer is changed. It
is never set to false though, causing the buffer to always be re-allocated.
Setting update_needed to false after the new buffer has been allocated fixes the
problem.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2013-10-15 09:30:00 +01:00 committed by Jonathan Cameron
parent 5b78e5138e
commit cb6fbfa138
1 changed files with 1 additions and 0 deletions
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drivers/iio/kfifo_buf.c
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@ -38,6 +38,7 @@ static int iio_request_update_kfifo(struct iio_buffer *r)
kfifo_free(&buf->kf);
ret = __iio_allocate_kfifo(buf, buf->buffer.bytes_per_datum,
buf->buffer.length);
buf->update_needed = false;
} else {
kfifo_reset_out(&buf->kf);
}