V4L/DVB (9974): v4l2-dev: allow drivers to pass v4l2_device as parent
Drivers that use v4l2_device can set that as parent pointer in the v4l2_dev
field instead of using the struct device parent field.
This allows v4l2-dev.c to check whether this driver is v4l2_device based,
and if so then it can offer additional services.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 4e0db88..7ad6711 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -30,6 +30,7 @@
#include <asm/system.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
#define VIDEO_NUM_DEVICES 256
#define VIDEO_NAME "video4linux"
@@ -407,6 +408,8 @@
vdev->vfl_type = type;
vdev->cdev = NULL;
+ if (vdev->v4l2_dev)
+ vdev->parent = vdev->v4l2_dev->dev;
/* Part 2: find a free minor, kernel number and device index. */
#ifdef CONFIG_VIDEO_FIXED_MINOR_RANGES