media: rockchip: fix isp and cif build warning

Change-Id: I6924f6a833679c945fe0469efa07b66b28440edc
Signed-off-by: Cai YiWei <cyw@rock-chips.com>

drivers/media/platform/rockchip/cif/mipi-csi2.c

@@ -717,8 +717,8 @@ static void csi2_notifier_unbind(struct v4l2_async_notifier *notifier,
 						  notifier);
 	struct csi2_sensor_info *sensor = sd_to_sensor(csi2, sd);
 
-	sensor->sd = NULL;
-
+	if (sensor)
+		sensor->sd = NULL;
 }
 
 static const struct

drivers/media/platform/rockchip/isp/rkisp.c

@@ -357,6 +357,8 @@ int rkisp_update_sensor_info(struct rkisp_device *dev)
 		return -ENODEV;
 
 	sensor = sd_to_sensor(dev, sensor_sd);
+	if (!sensor)
+		return -ENODEV;
 	ret = v4l2_subdev_call(sensor->sd, pad, get_mbus_config,
 			       0, &sensor->mbus);
 	if (ret && ret != -ENOIOCTLCMD)

drivers/media/platform/rockchip/isp1/rkisp1.c

@@ -1256,6 +1256,8 @@ static int rkisp1_isp_sd_set_fmt(struct v4l2_subdev *sd,
 		const struct ispsd_in_fmt *in_fmt;
 
 		in_fmt = find_in_fmt(mf->code);
+		if (!in_fmt)
+			goto err;
 		isp_sd->in_fmt = *in_fmt;
 		isp_sd->in_frm = *mf;
 	} else if (fmt->pad == RKISP1_ISP_PAD_SOURCE_PATH) {
@@ -1263,6 +1265,8 @@ static int rkisp1_isp_sd_set_fmt(struct v4l2_subdev *sd,
 
 		/* Ignore width/height */
 		out_fmt = find_out_fmt(mf->code);
+		if (!out_fmt)
+			goto err;
 		isp_sd->out_fmt = *out_fmt;
 		/*
 		 * It is quantization for output,