[PATCH v3 3/8] rcar-vin: Allow interrupting lock when trying to open the video device

[Niklas Söderlund]

The user should be allowed to break waiting for the lock when opening
the video device.

Signed-off-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
Reviewed-by: Ulrich Hecht <uli+rene...@fpond.eu>
Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
---
 drivers/media/platform/rcar-vin/rcar-v4l2.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c 
b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index 0841f1a0bfd7ba3a..f67cef97b89a3bd4 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -821,7 +821,9 @@ static int rvin_open(struct file *file)
        struct rvin_dev *vin = video_drvdata(file);
        int ret;
 
-       mutex_lock(&vin->lock);
+       ret = mutex_lock_interruptible(&vin->lock);
+       if (ret)
+               return ret;
 
        file->private_data = vin;
 
-- 
2.21.0