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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2017-08-30 20:18:04 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-10-31 20:51:45 +0300 |
| commit | b6ee3f0dcf43dc3e8dbbe9be9c4e728c8d52f1ba (patch) | |
| tree | 4171a3b2634b8238b12188cd55fd629157efaeb6 /drivers/media/platform/xilinx/xilinx-vipp.c | |
| parent | bce9e317cec9c4ffff3dde1170c0ad70f5e690c8 (diff) | |
| download | linux-b6ee3f0dcf43dc3e8dbbe9be9c4e728c8d52f1ba.tar.xz | |
media: v4l: async: Move async subdev notifier operations to a separate structure
The async subdev notifier .bound(), .unbind() and .complete() operations
are function pointers stored directly in the v4l2_async_subdev
structure. As the structure isn't immutable, this creates a potential
security risk as the function pointers are mutable.
To fix this, move the function pointers to a new
v4l2_async_subdev_operations structure that can be made const in
drivers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/xilinx/xilinx-vipp.c')
| -rw-r--r-- | drivers/media/platform/xilinx/xilinx-vipp.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c index ebfdf334d99c..d881cf09876d 100644 --- a/drivers/media/platform/xilinx/xilinx-vipp.c +++ b/drivers/media/platform/xilinx/xilinx-vipp.c @@ -351,6 +351,11 @@ static int xvip_graph_notify_bound(struct v4l2_async_notifier *notifier, return -EINVAL; } +static const struct v4l2_async_notifier_operations xvip_graph_notify_ops = { + .bound = xvip_graph_notify_bound, + .complete = xvip_graph_notify_complete, +}; + static int xvip_graph_parse_one(struct xvip_composite_device *xdev, struct device_node *node) { @@ -548,8 +553,7 @@ static int xvip_graph_init(struct xvip_composite_device *xdev) xdev->notifier.subdevs = subdevs; xdev->notifier.num_subdevs = num_subdevs; - xdev->notifier.bound = xvip_graph_notify_bound; - xdev->notifier.complete = xvip_graph_notify_complete; + xdev->notifier.ops = &xvip_graph_notify_ops; ret = v4l2_async_notifier_register(&xdev->v4l2_dev, &xdev->notifier); if (ret < 0) { |