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media: v4l2-ioctl: delete unused v4l2_disable_ioctl_locking

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The last user of this 'feature' was the gspca driver. Now that
that driver has been converted to vb2 we can delete this code.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hans Verkuil 2018-05-12 10:44:03 -04:00 committed by Mauro Carvalho Chehab
parent 8a7c5594c0
commit 0d5615d347
2 changed files with 0 additions and 17 deletions
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2
drivers/media/v4l2-core/v4l2-ioctl.c
View File

@ -2666,8 +2666,6 @@ struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
{
if (_IOC_NR(cmd) >= V4L2_IOCTLS)
return vdev->lock;
if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
return NULL;
if (vdev->queue && vdev->queue->lock &&
(v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
return vdev->queue->lock;

15
include/media/v4l2-dev.h
View File

@ -238,7 +238,6 @@ struct v4l2_file_operations {
* @ioctl_ops: pointer to &struct v4l2_ioctl_ops with ioctl callbacks
*
* @valid_ioctls: bitmap with the valid ioctls for this device
* @disable_locking: bitmap with the ioctls that don't require locking
* @lock: pointer to &struct mutex serialization lock
*
* .. note::
@ -291,7 +290,6 @@ struct video_device
const struct v4l2_ioctl_ops *ioctl_ops;
DECLARE_BITMAP(valid_ioctls, BASE_VIDIOC_PRIVATE);
DECLARE_BITMAP(disable_locking, BASE_VIDIOC_PRIVATE);
struct mutex *lock;
};
@ -446,19 +444,6 @@ void video_device_release_empty(struct video_device *vdev);
*/
bool v4l2_is_known_ioctl(unsigned int cmd);
/** v4l2_disable_ioctl_locking - mark that a given command
* shouldn't use core locking
*
* @vdev: pointer to &struct video_device
* @cmd: ioctl command
*/
static inline void v4l2_disable_ioctl_locking(struct video_device *vdev,
unsigned int cmd)
{
if (_IOC_NR(cmd) < BASE_VIDIOC_PRIVATE)
set_bit(_IOC_NR(cmd), vdev->disable_locking);
}
/**
* v4l2_disable_ioctl- mark that a given command isn't implemented.
* shouldn't use core locking