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[media] media: use entity.graph_obj.mdev instead of .parent

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The struct media_entity has a .parent field that stores a pointer
to the parent struct media_device. But recently a media_gobj was
embedded into the entities and since struct media_gojb already has
a pointer to a struct media_device in the .mdev field, the .parent
field becomes redundant and can be removed.

This patch replaces all the usage of .parent by .graph_obj.mdev so
that field will become unused and can be removed on a later patch.

No functional changes.

The transformation was made using the following coccinelle spatch:

@@
struct media_entity *me;
@@

- me->parent
+ me->graph_obj.mdev

@@
struct media_entity *link;
@@

- link->source->entity->parent
+ link->source->entity->graph_obj.mdev

@@
struct exynos_video_entity *ve;
@@

- ve->vdev.entity.parent
+ ve->vdev.entity.graph_obj.mdev

Suggested-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Javier Martinez Canillas 2015-08-19 12:35:21 -03:00 committed by Mauro Carvalho Chehab
parent 8df00a1581
commit d10c98949d
13 changed files with 45 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/media/media-device.c
View File

@ -435,8 +435,8 @@ int __must_check media_device_register_entity(struct media_device *mdev,
int i;
/* Warn if we apparently re-register an entity */
WARN_ON(entity->parent != NULL);
entity->parent = mdev;
WARN_ON(entity->graph_obj.mdev != NULL);
entity->graph_obj.mdev = mdev;
spin_lock(&mdev->lock);
/* Initialize media_gobj embedded at the entity */
@ -471,7 +471,7 @@ EXPORT_SYMBOL_GPL(media_device_register_entity);
void media_device_unregister_entity(struct media_entity *entity)
{
int i;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
if (mdev == NULL)
return;
@ -484,7 +484,7 @@ void media_device_unregister_entity(struct media_entity *entity)
media_gobj_remove(&entity->graph_obj);
list_del(&entity->list);
spin_unlock(&mdev->lock);
entity->parent = NULL;
entity->graph_obj.mdev = NULL;
}
EXPORT_SYMBOL_GPL(media_device_unregister_entity);

34
drivers/media/media-entity.c
View File

@ -332,7 +332,7 @@ EXPORT_SYMBOL_GPL(media_entity_graph_walk_next);
__must_check int media_entity_pipeline_start(struct media_entity *entity,
struct media_pipeline *pipe)
{
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
struct media_entity_graph graph;
struct media_entity *entity_err = entity;
int ret;
@ -387,7 +387,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
ret = entity->ops->link_validate(link);
if (ret < 0 && ret != -ENOIOCTLCMD) {
dev_dbg(entity->parent->dev,
dev_dbg(entity->graph_obj.mdev->dev,
"link validation failed for \"%s\":%u -> \"%s\":%u, error %d\n",
link->source->entity->name,
link->source->index,
@ -401,7 +401,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
if (!bitmap_full(active, entity->num_pads)) {
ret = -EPIPE;
dev_dbg(entity->parent->dev,
dev_dbg(entity->graph_obj.mdev->dev,
"\"%s\":%u must be connected by an enabled link\n",
entity->name,
(unsigned)find_first_zero_bit(
@ -454,7 +454,7 @@ EXPORT_SYMBOL_GPL(media_entity_pipeline_start);
*/
void media_entity_pipeline_stop(struct media_entity *entity)
{
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
struct media_entity_graph graph;
mutex_lock(&mdev->graph_mutex);
@ -490,8 +490,8 @@ struct media_entity *media_entity_get(struct media_entity *entity)
if (entity == NULL)
return NULL;
if (entity->parent->dev &&
!try_module_get(entity->parent->dev->driver->owner))
if (entity->graph_obj.mdev->dev &&
!try_module_get(entity->graph_obj.mdev->dev->driver->owner))
return NULL;
return entity;
@ -511,8 +511,8 @@ void media_entity_put(struct media_entity *entity)
if (entity == NULL)
return;
if (entity->parent->dev)
module_put(entity->parent->dev->driver->owner);
if (entity->graph_obj.mdev->dev)
module_put(entity->graph_obj.mdev->dev->driver->owner);
}
EXPORT_SYMBOL_GPL(media_entity_put);
@ -561,7 +561,8 @@ media_create_pad_link(struct media_entity *source, u16 source_pad,
link->flags = flags;
/* Initialize graph object embedded at the new link */
media_gobj_init(source->parent, MEDIA_GRAPH_LINK, &link->graph_obj);
media_gobj_init(source->graph_obj.mdev, MEDIA_GRAPH_LINK,
&link->graph_obj);
/* Create the backlink. Backlinks are used to help graph traversal and
* are not reported to userspace.
@ -577,7 +578,8 @@ media_create_pad_link(struct media_entity *source, u16 source_pad,
backlink->flags = flags;
/* Initialize graph object embedded at the new link */
media_gobj_init(sink->parent, MEDIA_GRAPH_LINK, &backlink->graph_obj);
media_gobj_init(sink->graph_obj.mdev, MEDIA_GRAPH_LINK,
&backlink->graph_obj);
link->reverse = backlink;
backlink->reverse = link;
@ -629,12 +631,12 @@ EXPORT_SYMBOL_GPL(__media_entity_remove_links);
void media_entity_remove_links(struct media_entity *entity)
{
/* Do nothing if the entity is not registered. */
if (entity->parent == NULL)
if (entity->graph_obj.mdev == NULL)
return;
mutex_lock(&entity->parent->graph_mutex);
mutex_lock(&entity->graph_obj.mdev->graph_mutex);
__media_entity_remove_links(entity);
mutex_unlock(&entity->parent->graph_mutex);
mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
}
EXPORT_SYMBOL_GPL(media_entity_remove_links);
@ -703,7 +705,7 @@ int __media_entity_setup_link(struct media_link *link, u32 flags)
(source->stream_count || sink->stream_count))
return -EBUSY;
mdev = source->parent;
mdev = source->graph_obj.mdev;
if (mdev->link_notify) {
ret = mdev->link_notify(link, flags,
@ -724,9 +726,9 @@ int media_entity_setup_link(struct media_link *link, u32 flags)
{
int ret;
mutex_lock(&link->source->entity->parent->graph_mutex);
mutex_lock(&link->source->entity->graph_obj.mdev->graph_mutex);
ret = __media_entity_setup_link(link, flags);
mutex_unlock(&link->source->entity->parent->graph_mutex);
mutex_unlock(&link->source->entity->graph_obj.mdev->graph_mutex);
return ret;
}

6
drivers/media/platform/exynos4-is/fimc-isp-video.c
View File

@ -287,7 +287,7 @@ static int isp_video_open(struct file *file)
goto rel_fh;
if (v4l2_fh_is_singular_file(file)) {
mutex_lock(&me->parent->graph_mutex);
mutex_lock(&me->graph_obj.mdev->graph_mutex);
ret = fimc_pipeline_call(ve, open, me, true);
@ -295,7 +295,7 @@ static int isp_video_open(struct file *file)
if (ret == 0)
me->use_count++;
mutex_unlock(&me->parent->graph_mutex);
mutex_unlock(&me->graph_obj.mdev->graph_mutex);
}
if (!ret)
goto unlock;
@ -311,7 +311,7 @@ static int isp_video_release(struct file *file)
struct fimc_isp *isp = video_drvdata(file);
struct fimc_is_video *ivc = &isp->video_capture;
struct media_entity *entity = &ivc->ve.vdev.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
mutex_lock(&isp->video_lock);

8
drivers/media/platform/exynos4-is/fimc-lite.c
View File

@ -494,7 +494,7 @@ static int fimc_lite_open(struct file *file)
atomic_read(&fimc->out_path) != FIMC_IO_DMA)
goto unlock;
mutex_lock(&me->parent->graph_mutex);
mutex_lock(&me->graph_obj.mdev->graph_mutex);
ret = fimc_pipeline_call(&fimc->ve, open, me, true);
@ -502,7 +502,7 @@ static int fimc_lite_open(struct file *file)
if (ret == 0)
me->use_count++;
mutex_unlock(&me->parent->graph_mutex);
mutex_unlock(&me->graph_obj.mdev->graph_mutex);
if (!ret) {
fimc_lite_clear_event_counters(fimc);
@ -535,9 +535,9 @@ static int fimc_lite_release(struct file *file)
fimc_pipeline_call(&fimc->ve, close);
clear_bit(ST_FLITE_IN_USE, &fimc->state);
mutex_lock(&entity->parent->graph_mutex);
mutex_lock(&entity->graph_obj.mdev->graph_mutex);
entity->use_count--;
mutex_unlock(&entity->parent->graph_mutex);
mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
}
_vb2_fop_release(file, NULL);

2
drivers/media/platform/exynos4-is/media-dev.c
View File

@ -1046,7 +1046,7 @@ static int __fimc_md_modify_pipeline(struct media_entity *entity, bool enable)
return ret;
}
/* Locking: called with entity->parent->graph_mutex mutex held. */
/* Locking: called with entity->graph_obj.mdev->graph_mutex mutex held. */
static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable)
{
struct media_entity *entity_err = entity;

8
drivers/media/platform/exynos4-is/media-dev.h
View File

@ -164,8 +164,8 @@ struct fimc_sensor_info *source_to_sensor_info(struct fimc_source_info *si)
static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me)
{
return me->parent == NULL ? NULL :
container_of(me->parent, struct fimc_md, media_dev);
return me->graph_obj.mdev == NULL ? NULL :
container_of(me->graph_obj.mdev, struct fimc_md, media_dev);
}
static inline struct fimc_md *notifier_to_fimc_md(struct v4l2_async_notifier *n)
@ -175,12 +175,12 @@ static inline struct fimc_md *notifier_to_fimc_md(struct v4l2_async_notifier *n)
static inline void fimc_md_graph_lock(struct exynos_video_entity *ve)
{
mutex_lock(&ve->vdev.entity.parent->graph_mutex);
mutex_lock(&ve->vdev.entity.graph_obj.mdev->graph_mutex);
}
static inline void fimc_md_graph_unlock(struct exynos_video_entity *ve)
{
mutex_unlock(&ve->vdev.entity.parent->graph_mutex);
mutex_unlock(&ve->vdev.entity.graph_obj.mdev->graph_mutex);
}
int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on);

4
drivers/media/platform/omap3isp/isp.c
View File

@ -787,7 +787,7 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
int change = use ? 1 : -1;
int ret;
mutex_lock(&entity->parent->graph_mutex);
mutex_lock(&entity->graph_obj.mdev->graph_mutex);
/* Apply use count to node. */
entity->use_count += change;
@ -798,7 +798,7 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
if (ret < 0)
entity->use_count -= change;
mutex_unlock(&entity->parent->graph_mutex);
mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
return ret;
}

2
drivers/media/platform/omap3isp/ispvideo.c
View File

@ -226,7 +226,7 @@ static int isp_video_get_graph_data(struct isp_video *video,
{
struct media_entity_graph graph;
struct media_entity *entity = &video->video.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
struct isp_video *far_end = NULL;
mutex_lock(&mdev->graph_mutex);

2
drivers/media/platform/vsp1/vsp1_video.c
View File

@ -380,7 +380,7 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
{
struct media_entity_graph graph;
struct media_entity *entity = &video->video.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
unsigned int i;
int ret;

2
drivers/media/platform/xilinx/xilinx-dma.c
View File

@ -181,7 +181,7 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe,
{
struct media_entity_graph graph;
struct media_entity *entity = &start->video.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
unsigned int num_inputs = 0;
unsigned int num_outputs = 0;

6
drivers/staging/media/davinci_vpfe/vpfe_video.c
View File

@ -130,7 +130,7 @@ __vpfe_video_get_format(struct vpfe_video_device *video,
static void vpfe_prepare_pipeline(struct vpfe_video_device *video)
{
struct media_entity *entity = &video->video_dev.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
struct vpfe_pipeline *pipe = &video->pipe;
struct vpfe_video_device *far_end = NULL;
struct media_entity_graph graph;
@ -288,7 +288,7 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe)
else
entity = &pipe->inputs[0]->video_dev.entity;
mdev = entity->parent;
mdev = entity->graph_obj.mdev;
mutex_lock(&mdev->graph_mutex);
media_entity_graph_walk_start(&graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
@ -328,7 +328,7 @@ static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe)
else
entity = &pipe->inputs[0]->video_dev.entity;
mdev = entity->parent;
mdev = entity->graph_obj.mdev;
mutex_lock(&mdev->graph_mutex);
media_entity_graph_walk_start(&graph, entity);

4
drivers/staging/media/omap4iss/iss.c
View File

@ -494,7 +494,7 @@ int omap4iss_pipeline_pm_use(struct media_entity *entity, int use)
int change = use ? 1 : -1;
int ret;
mutex_lock(&entity->parent->graph_mutex);
mutex_lock(&entity->graph_obj.mdev->graph_mutex);
/* Apply use count to node. */
entity->use_count += change;
@ -505,7 +505,7 @@ int omap4iss_pipeline_pm_use(struct media_entity *entity, int use)
if (ret < 0)
entity->use_count -= change;
mutex_unlock(&entity->parent->graph_mutex);
mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
return ret;
}

2
drivers/staging/media/omap4iss/iss_video.c
View File

@ -206,7 +206,7 @@ iss_video_far_end(struct iss_video *video)
{
struct media_entity_graph graph;
struct media_entity *entity = &video->video.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
struct iss_video *far_end = NULL;
mutex_lock(&mdev->graph_mutex);