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[media] media: au0828 set ctrl_input in au0828_s_input() 

dev->ctrl_input is set in vidioc_s_input() and doesn't get set in
au0828_s_input(). As a result, dev->ctrl_input is left uninitialized
until user space calls s_input.

It works correctly because the default input value is 0 and which is
what dev->ctrl_input gets initialized via kzalloc().

Change to set dev->ctrl_input in au0828_s_input(). Also optimize
vidioc_s_input() to return if the new input value is same as the
current.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Shuah Khan 2016-02-12 21:18:03 -02:00 committed by Mauro Carvalho Chehab
parent b21d29e08c
commit 174ced212c
1 changed files with 8 additions and 2 deletions
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10
drivers/media/usb/au0828/au0828-video.c
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@ -1417,9 +1417,11 @@ static void au0828_s_input(struct au0828_dev *dev, int index)
default:
dprintk(1, "unknown input type set [%d]\n",
AUVI_INPUT(index).type);
break;
return;
}
dev->ctrl_input = index;
v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
AUVI_INPUT(index).vmux, 0, 0);
@ -1458,7 +1460,10 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
return -EINVAL;
if (AUVI_INPUT(index).type == 0)
return -EINVAL;
dev->ctrl_input = index;
if (dev->ctrl_input == index)
return 0;
au0828_s_input(dev, index);
return 0;
}
@ -1974,6 +1979,7 @@ int au0828_analog_register(struct au0828_dev *dev,
dev->ctrl_ainput = 0;
dev->ctrl_freq = 960;
dev->std = V4L2_STD_NTSC_M;
/* Default input is TV Tuner */
au0828_s_input(dev, 0);
mutex_init(&dev->vb_queue_lock);