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media: sun4i_csi: Implement link validate for sun4i_csi subdev

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commit 2dc5d5d401 upstream.

The sun4i_csi driver doesn't implement link validation for the subdev it
registers, leaving the link between the subdev and its source
unvalidated. Fix it, using the v4l2_subdev_link_validate() helper.

Fixes: 577bbf23b7 ("media: sunxi: Add A10 CSI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Laurent Pinchart 2024-06-19 02:46:16 +03:00 committed by Greg Kroah-Hartman
parent fb2867420e
commit 6fa24b41d3
1 changed files with 5 additions and 0 deletions
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5
drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c
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@ -39,6 +39,10 @@ static const struct media_entity_operations sun4i_csi_video_entity_ops = {
.link_validate = v4l2_subdev_link_validate,
};
static const struct media_entity_operations sun4i_csi_subdev_entity_ops = {
.link_validate = v4l2_subdev_link_validate,
};
static int sun4i_csi_notify_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *subdev,
struct v4l2_async_connection *asd)
@ -213,6 +217,7 @@ static int sun4i_csi_probe(struct platform_device *pdev)
v4l2_subdev_init(subdev, &sun4i_csi_subdev_ops);
subdev->flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
subdev->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
subdev->entity.ops = &sun4i_csi_subdev_entity_ops;
subdev->owner = THIS_MODULE;
snprintf(subdev->name, sizeof(subdev->name), "sun4i-csi-0");
v4l2_set_subdevdata(subdev, csi);