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> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
