staging:iio:ring_sw: Fix incorrect test on successful read of last va…

…lue, causes infinite loop Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
git-mirror · May 11, 2010 · 8474ddd · 8474ddd
1 parent 3bf877c
commit 8474ddd
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/staging/iio/ring_sw.c b/drivers/staging/iio/ring_sw.c
@@ -295,7 +295,7 @@ int iio_read_last_from_sw_ring(struct iio_sw_ring_buffer *ring,
 		return -EAGAIN;
 	memcpy(data, last_written_p_copy, ring->buf.bpd);
 
-	if (unlikely(ring->last_written_p >= last_written_p_copy))
+	if (unlikely(ring->last_written_p != last_written_p_copy))
 		goto again;
 
 	iio_unmark_sw_rb_in_use(&ring->buf);