[PATCH v5 9/9] media: staging/imx: Don't set driver data for v4l2_dev

[Steve Longerbeam]

The media device is already available via multiple methods, there is no
need to set driver data for v4l2_dev to the media device.

In imx_media_link_notify(), get media device from link->graph_obj.mdev.

In imx_media_capture_device_register(), get media device from
v4l2_dev->mdev.

Signed-off-by: Steve Longerbeam <slongerb...@gmail.com>
---
 drivers/staging/media/imx/imx-media-capture.c    | 5 +++--
 drivers/staging/media/imx/imx-media-dev-common.c | 7 ++-----
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/media/imx/imx-media-capture.c 
b/drivers/staging/media/imx/imx-media-capture.c
index 8a908c3e5e60..ea7f2decfc16 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c
@@ -735,15 +735,16 @@ int imx_media_capture_device_register(struct 
imx_media_video_dev *vdev)
 {
        struct capture_priv *priv = to_capture_priv(vdev);
        struct v4l2_subdev *sd = priv->src_sd;
+       struct v4l2_device *v4l2_dev = sd->v4l2_dev;
        struct video_device *vfd = vdev->vfd;
        struct vb2_queue *vq = &priv->q;
        struct v4l2_subdev_format fmt_src;
        int ret;
 
        /* get media device */
-       priv->md = dev_get_drvdata(sd->v4l2_dev->dev);
+       priv->md = container_of(v4l2_dev->mdev, struct imx_media_dev, md);
 
-       vfd->v4l2_dev = sd->v4l2_dev;
+       vfd->v4l2_dev = v4l2_dev;
 
        ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
        if (ret) {
diff --git a/drivers/staging/media/imx/imx-media-dev-common.c 
b/drivers/staging/media/imx/imx-media-dev-common.c
index 89dc4ec8dadb..66b505f7e8df 100644
--- a/drivers/staging/media/imx/imx-media-dev-common.c
+++ b/drivers/staging/media/imx/imx-media-dev-common.c
@@ -260,10 +260,11 @@ static int imx_media_inherit_controls(struct 
imx_media_dev *imxmd,
 static int imx_media_link_notify(struct media_link *link, u32 flags,
                                 unsigned int notification)
 {
+       struct imx_media_dev *imxmd = container_of(link->graph_obj.mdev,
+                                                  struct imx_media_dev, md);
        struct media_entity *source = link->source->entity;
        struct imx_media_pad_vdev *pad_vdev;
        struct list_head *pad_vdev_list;
-       struct imx_media_dev *imxmd;
        struct video_device *vfd;
        struct v4l2_subdev *sd;
        int pad_idx, ret;
@@ -279,8 +280,6 @@ static int imx_media_link_notify(struct media_link *link, 
u32 flags,
        sd = media_entity_to_v4l2_subdev(source);
        pad_idx = link->source->index;
 
-       imxmd = dev_get_drvdata(sd->v4l2_dev->dev);
-
        pad_vdev_list = to_pad_vdev_list(sd, pad_idx);
        if (!pad_vdev_list) {
                /* nothing to do if source sd has no pad vdev list */
@@ -384,8 +383,6 @@ struct imx_media_dev *imx_media_dev_init(struct device *dev,
                goto cleanup;
        }
 
-       dev_set_drvdata(imxmd->v4l2_dev.dev, imxmd);
-
        INIT_LIST_HEAD(&imxmd->vdev_list);
 
        v4l2_async_notifier_init(&imxmd->notifier);
-- 
2.17.1