[PATCH 3/3] iio:kfifo: Set update_needed to false after allocating a new buffer

[Lars-Peter Clausen <lars@metafoo.de>]

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>
---
 drivers/iio/kfifo_buf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/kfifo_buf.c
index a050b18..920e383 100644
--- a/drivers/iio/kfifo_buf.c
+++ b/drivers/iio/kfifo_buf.c
@@ -40,6 +40,7 @@ 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;
 	}
 	r->stufftoread = false;
 	mutex_unlock(&buf->user_lock);
-- 
1.8.0