[media] V4L: soc-camera: camera client operations no longer compulsory

With the transition of all soc-camera host drivers to use V4L2
subdevice .[gs]_mbus_config() operations, soc-camera client operations
no longer have to be compulsory.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/soc_camera.c

@@ -482,7 +482,7 @@ static int soc_camera_open(struct file *file)
 	struct soc_camera_host *ici;
 	int ret;
 
-	if (!icd->ops)
+	if (!to_soc_camera_control(icd))
 		/* No device driver attached */
 		return -ENODEV;
 
@@ -835,6 +835,9 @@ static int soc_camera_queryctrl(struct file *file, void *priv,
 			return 0;
 		}
 
+	if (!icd->ops)
+		return -EINVAL;
+
 	/* Then device controls */
 	for (i = 0; i < icd->ops->num_controls; i++)
 		if (qc->id == icd->ops->controls[i].id) {
@@ -1461,11 +1464,6 @@ static int soc_camera_video_start(struct soc_camera_device *icd)
 	if (!icd->parent)
 		return -ENODEV;
 
-	if (!icd->ops ||
-	    !icd->ops->query_bus_param ||
-	    !icd->ops->set_bus_param)
-		return -EINVAL;
-
 	ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1);
 	if (ret < 0) {
 		dev_err(icd->pdev, "video_register_device failed: %d\n", ret);