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@xxxxxxxxxx>
---
No changes in v2
---
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 d654f42..95c6fc8 100644
--- a/drivers/iio/kfifo_buf.c
+++ b/drivers/iio/kfifo_buf.c
@@ -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);
}
--
1.8.0
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