[media] exynos4-is: Fix initialization of subdev 'flags' field

Ensure the value of struct v4l2_subdev::flags field as set
in v4l2_subdev_init() is preserved when initializing it in
the subdev drivers.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/exynos4-is/fimc-capture.c

@@ -1869,7 +1869,7 @@ int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
 	int ret;
 
 	v4l2_subdev_init(sd, &fimc_subdev_ops);
-	sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->id);
 
 	fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;

drivers/media/platform/exynos4-is/fimc-isp.c

@@ -621,7 +621,7 @@ int fimc_isp_subdev_create(struct fimc_isp *isp)
 
 	v4l2_subdev_init(sd, &fimc_is_subdev_ops);
 	sd->grp_id = GRP_ID_FIMC_IS;
-	sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	snprintf(sd->name, sizeof(sd->name), "FIMC-IS-ISP");
 
 	isp->subdev_pads[FIMC_ISP_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;

drivers/media/platform/exynos4-is/fimc-lite.c

@@ -1377,7 +1377,7 @@ static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
 	int ret;
 
 	v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
-	sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
 
 	fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;