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media: v4l2-async: Discourage use of v4l2_async_notifier_add_subdev

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Most -if not all- use-cases are expected to be covered by one of:
v4l2_async_notifier_add_fwnode_subdev,
v4l2_async_notifier_add_fwnode_remote_subdev or
v4l2_async_notifier_add_i2c_subdev.

We'd like to discourage drivers from using v4l2_async_notifier_add_subdev,
so rename it as __v4l2_async_notifier_add_subdev. This is
typically a good hint for drivers to avoid using the function.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Ezequiel Garcia
2021-01-18 02:52:57 +01:00
committed by Mauro Carvalho Chehab
parent be5ec392bb
commit c1cc236250
3 changed files with 12 additions and 7 deletions
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9
include/media/v4l2-async.h
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@@ -133,17 +133,22 @@ void v4l2_async_debug_init(struct dentry *debugfs_dir);
void v4l2_async_notifier_init(struct v4l2_async_notifier *notifier);
/**
* v4l2_async_notifier_add_subdev - Add an async subdev to the
* __v4l2_async_notifier_add_subdev - Add an async subdev to the
* notifier's master asd list.
*
* @notifier: pointer to &struct v4l2_async_notifier
* @asd: pointer to &struct v4l2_async_subdev
*
* \warning: Drivers should avoid using this function and instead use one of:
* @v4l2_async_notifier_add_fwnode_subdev,
* @v4l2_async_notifier_add_fwnode_remote_subdev or
* @v4l2_async_notifier_add_i2c_subdev.
*
* Call this function before registering a notifier to link the provided @asd to
* the notifiers master @asd_list. The @asd must be allocated with k*alloc() as
* it will be freed by the framework when the notifier is destroyed.
*/
int v4l2_async_notifier_add_subdev(struct v4l2_async_notifier *notifier,
int __v4l2_async_notifier_add_subdev(struct v4l2_async_notifier *notifier,
struct v4l2_async_subdev *asd);
/**