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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2011-03-22 10:14:07 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-22 16:38:16 -0300 |
| commit | b1a873a37b6551a214ad37d1eee7654a9d65fd6e (patch) | |
| tree | 3667a3d36c9f7c6ae73609004331f006751c44be /drivers/media/video/v4l2-fh.c | |
| parent | 2f82441a8644287e5b647329cc30b590f6fd3714 (diff) | |
| download | kernel_samsung_smdk4412-b1a873a37b6551a214ad37d1eee7654a9d65fd6e.tar.gz kernel_samsung_smdk4412-b1a873a37b6551a214ad37d1eee7654a9d65fd6e.tar.bz2 kernel_samsung_smdk4412-b1a873a37b6551a214ad37d1eee7654a9d65fd6e.zip | |
[media] v4l2: use new flag to enable core priority handling
Rather than guess which driver supports core priority handling, require drivers
that do to explicitly set the V4L2_FL_USE_FH_PRIO flag in video_device.
Updated the core prio handling accordingly and set the flag in the three
drivers that do.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/v4l2-fh.c')
| -rw-r--r-- | drivers/media/video/v4l2-fh.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/media/video/v4l2-fh.c b/drivers/media/video/v4l2-fh.c index 543b3fe6784..717f71e6370 100644 --- a/drivers/media/video/v4l2-fh.c +++ b/drivers/media/video/v4l2-fh.c @@ -35,7 +35,6 @@ int v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev) INIT_LIST_HEAD(&fh->list); set_bit(V4L2_FL_USES_V4L2_FH, &fh->vdev->flags); fh->prio = V4L2_PRIORITY_UNSET; - BUG_ON(vdev->prio == NULL); /* * fh->events only needs to be initialized if the driver @@ -54,7 +53,8 @@ void v4l2_fh_add(struct v4l2_fh *fh) { unsigned long flags; - v4l2_prio_open(fh->vdev->prio, &fh->prio); + if (test_bit(V4L2_FL_USE_FH_PRIO, &fh->vdev->flags)) + v4l2_prio_open(fh->vdev->prio, &fh->prio); spin_lock_irqsave(&fh->vdev->fh_lock, flags); list_add(&fh->list, &fh->vdev->fh_list); spin_unlock_irqrestore(&fh->vdev->fh_lock, flags); @@ -82,7 +82,8 @@ void v4l2_fh_del(struct v4l2_fh *fh) spin_lock_irqsave(&fh->vdev->fh_lock, flags); list_del_init(&fh->list); spin_unlock_irqrestore(&fh->vdev->fh_lock, flags); - v4l2_prio_close(fh->vdev->prio, fh->prio); + if (test_bit(V4L2_FL_USE_FH_PRIO, &fh->vdev->flags)) + v4l2_prio_close(fh->vdev->prio, fh->prio); } EXPORT_SYMBOL_GPL(v4l2_fh_del); |