staging/airspy: fix a compilation warning

drivers/staging/media/airspy/airspy.c: In function 'airspy_stop_streaming':
drivers/staging/media/airspy/airspy.c:569:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
  int ret;
      ^

Cc: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/staging/media/airspy/airspy.c b/drivers/staging/media/airspy/airspy.c
index 0875808..91857e7 100644 (file)
--- a/drivers/staging/media/airspy/airspy.c
+++ b/drivers/staging/media/airspy/airspy.c
@@ -566,14 +566,13 @@ err:
 static void airspy_stop_streaming(struct vb2_queue *vq)
 {
        struct airspy *s = vb2_get_drv_priv(vq);
-       int ret;
 
        dev_dbg(&s->udev->dev, "%s:\n", __func__);
 
        mutex_lock(&s->v4l2_lock);
 
        /* stop hardware streaming */
-       ret = airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 0, 0, NULL, 0);
+       airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 0, 0, NULL, 0);
 
        airspy_kill_urbs(s);
        airspy_free_urbs(s);