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[media] vim2m: embed video_device

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Embed the video_device struct to simplify the error handling and in
order to (eventually) get rid of video_device_alloc/release.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2015-03-09 13:33:56 -03:00 committed by Mauro Carvalho Chehab
parent 635d62f073
commit 093654201e
1 changed files with 7 additions and 16 deletions
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23
drivers/media/platform/vim2m.c
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@ -142,7 +142,7 @@ static struct vim2m_fmt *find_format(struct v4l2_format *f)
struct vim2m_dev {
struct v4l2_device v4l2_dev;
struct video_device *vfd;
struct video_device vfd;
atomic_t num_inst;
struct mutex dev_mutex;
@ -968,7 +968,7 @@ static struct video_device vim2m_videodev = {
.fops = &vim2m_fops,
.ioctl_ops = &vim2m_ioctl_ops,
.minor = -1,
.release = video_device_release,
.release = video_device_release_empty,
};
static struct v4l2_m2m_ops m2m_ops = {
@ -996,26 +996,19 @@ static int vim2m_probe(struct platform_device *pdev)
atomic_set(&dev->num_inst, 0);
mutex_init(&dev->dev_mutex);
vfd = video_device_alloc();
if (!vfd) {
v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
ret = -ENOMEM;
goto unreg_dev;
}
*vfd = vim2m_videodev;
dev->vfd = vim2m_videodev;
vfd = &dev->vfd;
vfd->lock = &dev->dev_mutex;
vfd->v4l2_dev = &dev->v4l2_dev;
ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
goto rel_vdev;
goto unreg_dev;
}
video_set_drvdata(vfd, dev);
snprintf(vfd->name, sizeof(vfd->name), "%s", vim2m_videodev.name);
dev->vfd = vfd;
v4l2_info(&dev->v4l2_dev,
"Device registered as /dev/video%d\n", vfd->num);
@ -1033,9 +1026,7 @@ static int vim2m_probe(struct platform_device *pdev)
err_m2m:
v4l2_m2m_release(dev->m2m_dev);
video_unregister_device(dev->vfd);
rel_vdev:
video_device_release(vfd);
video_unregister_device(&dev->vfd);
unreg_dev:
v4l2_device_unregister(&dev->v4l2_dev);
@ -1049,7 +1040,7 @@ static int vim2m_remove(struct platform_device *pdev)
v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME);
v4l2_m2m_release(dev->m2m_dev);
del_timer_sync(&dev->timer);
video_unregister_device(dev->vfd);
video_unregister_device(&dev->vfd);
v4l2_device_unregister(&dev->v4l2_dev);
return 0;