kernel/linux.git/drivers/media/mc/mc-device.c, branch linux-7.1.y

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

media: mc: add debugfs node to keep track of requests

2026-01-05T14:56:31+00:00

Keep track of the number of requests and request objects of a media device. Helps to verify that all request-related memory is freed. Signed-off-by: Hans Verkuil Signed-off-by: Nicolas Dufresne

media: drop CONFIG_MEDIA_CONTROLLER_REQUEST_API

2023-11-23T12:03:45+00:00

This config option was added during the development of the Request API to make it easy to disable it. The Request API is now stable so it is time to drop this option altogether. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: mc-device: remove unnecessary __must_check

2023-04-11T16:54:01+00:00

In the file mc-device.c, the function media_device_register_entity_notify() does not need to have the __must_check attribute since it returns only a value of 0. Therefore, we can remove this attribute and change the function's return type. Signed-off-by: Jason Kim Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: mc: entity: Add iterator helper for entity pads

2022-09-24T07:09:50+00:00

Add an iterator helper to easily cycle through all pads in an entity and use it in media-entity and media-device code where appropriate. Signed-off-by: Jacopo Mondi Reviewed-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: mc: delete redundant code in __media_device_unregister_entity

2022-04-24T07:14:19+00:00

media_gobj_destroy has already set graph_obj.mdev to NULL. There is no need to set it again. [Sakari Ailus: Remove extra newline, rewrap commit msg] Signed-off-by: Hangyu Hua Reviewed-by: Laurent Pinchart Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: mc: Set bus_info in media_device_init()

2022-04-24T07:05:53+00:00

Set bus_info field based on struct device in media_device_init() and remove corresponding code from drivers. Also update media_device_init() documentation: the dev field must be now initialised before calling it. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: mc: Remove redundant documentation

2022-04-24T07:01:38+00:00

Remove redundant kerneldoc documentation in mc-device.c. The functions are already documented in media-device.h, where non-redundant documentation is also moved. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: mc-device.c: use DEVICE_ATTR_RO() helper macro

2021-08-04T12:43:50+00:00

Use DEVICE_ATTR_RO() helper macro instead of DEVICE_ATTR(), which is simpler and more readable. Due to the name of the read function of the sysfs attribute is normalized, there is a natural association. Signed-off-by: Zhen Lei Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab