V4L/DVB (11805): au0828: send command to power down tuner when done with analog

Make sure the au0828 issues the command to power down the tuner when the
user is done using analog support.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/au0828/au0828-video.c

@@ -829,6 +829,9 @@ static int au0828_v4l2_close(struct file *filp)
 
 		au0828_uninit_isoc(dev);
 
+		/* Save some power by putting tuner to sleep */
+		v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
+
 		/* When close the device, set the usb intf0 into alt0 to free
 		   USB bandwidth */
 		ret = usb_set_interface(dev->usbdev, 0, 0);