[media] media: soc_camera: rcar_vin: Fix wait_for_completion

When stopping abnormally, a driver can't return from wait_for_completion.
This patch resolved this problem by changing wait_for_completion_timeout
from wait_for_completion.

Signed-off-by: Koji Matsuoka <koji.matsuoka.xm@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/soc_camera/rcar_vin.c b/drivers/media/platform/soc_camera/rcar_vin.c
index 9351f64..6460f8e 100644 (file)
--- a/drivers/media/platform/soc_camera/rcar_vin.c
+++ b/drivers/media/platform/soc_camera/rcar_vin.c
@@ -135,6 +135,8 @@
 #define VIN_MAX_WIDTH          2048
 #define VIN_MAX_HEIGHT         2048
 
+#define TIMEOUT_MS             100
+
 enum chip_id {
        RCAR_GEN2,
        RCAR_H1,
@@ -820,7 +822,10 @@ static void rcar_vin_wait_stop_streaming(struct rcar_vin_priv *priv)
                if (priv->state == STOPPING) {
                        priv->request_to_stop = true;
                        spin_unlock_irq(&priv->lock);
-                       wait_for_completion(&priv->capture_stop);
+                       if (!wait_for_completion_timeout(
+                                       &priv->capture_stop,
+                                       msecs_to_jiffies(TIMEOUT_MS)))
+                               priv->state = STOPPED;
                        spin_lock_irq(&priv->lock);
                }
        }