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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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8
drivers/media/v4l2-core/v4l2-async.c
View file

@ -611,7 +611,7 @@ void v4l2_async_notifier_cleanup(struct v4l2_async_notifier *notifier)
}
EXPORT_SYMBOL_GPL(v4l2_async_notifier_cleanup);
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)
{
int ret;
@ -628,7 +628,7 @@ unlock:
mutex_unlock(&list_lock);
return ret;
}
EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_subdev);
EXPORT_SYMBOL_GPL(__v4l2_async_notifier_add_subdev);
struct v4l2_async_subdev *
v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
@ -645,7 +645,7 @@ v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
asd->match.fwnode = fwnode_handle_get(fwnode);
ret = v4l2_async_notifier_add_subdev(notifier, asd);
ret = __v4l2_async_notifier_add_subdev(notifier, asd);
if (ret) {
fwnode_handle_put(fwnode);
kfree(asd);
@ -695,7 +695,7 @@ v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
asd->match.i2c.adapter_id = adapter_id;
asd->match.i2c.address = address;
ret = v4l2_async_notifier_add_subdev(notifier, asd);
ret = __v4l2_async_notifier_add_subdev(notifier, asd);
if (ret) {
kfree(asd);
return ERR_PTR(ret);