[media] media: au0828 enable the right media source when input changes

Change vidioc_s_input() to enable the media source for the newly
selected input.

v4l2-core enables source before calling au0828's vidioc_s_input()
handler. Hence, when input selection changes, media source for the
newly selected input needs to be enabled.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c
index 3832a1ceb02a1e21437e784bf1cc719a30ecc10c..13f6dab9ccc290f0cd698f7a87deeadfe8ee166e 100644 (file)
--- a/drivers/media/usb/au0828/au0828-video.c
+++ b/drivers/media/usb/au0828/au0828-video.c
@@ -1453,6 +1453,7 @@ static void au0828_s_input(struct au0828_dev *dev, int index)
 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
 {
        struct au0828_dev *dev = video_drvdata(file);
+       struct video_device *vfd = video_devdata(file);
 
        dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
                index);
@@ -1465,7 +1466,14 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
                return 0;
 
        au0828_s_input(dev, index);
-       return 0;
+
+       /*
+        * Input has been changed. Disable the media source
+        * associated with the old input and enable source
+        * for the newly set input
+        */
+       v4l_disable_media_source(vfd);
+       return v4l_enable_media_source(vfd);
 }
 
 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)