diff options
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-core.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 9fc4bab..c9b50c7 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -2578,8 +2578,15 @@ EXPORT_SYMBOL_GPL(vb2_ioctl_expbuf); int vb2_fop_mmap(struct file *file, struct vm_area_struct *vma) { struct video_device *vdev = video_devdata(file); + struct mutex *lock = vdev->queue->lock ? vdev->queue->lock : vdev->lock; + int err; - return vb2_mmap(vdev->queue, vma); + if (lock && mutex_lock_interruptible(lock)) + return -ERESTARTSYS; + err = vb2_mmap(vdev->queue, vma); + if (lock) + mutex_unlock(lock); + return err; } EXPORT_SYMBOL_GPL(vb2_fop_mmap); @@ -2685,8 +2692,15 @@ unsigned long vb2_fop_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct video_device *vdev = video_devdata(file); + struct mutex *lock = vdev->queue->lock ? vdev->queue->lock : vdev->lock; + int ret; - return vb2_get_unmapped_area(vdev->queue, addr, len, pgoff, flags); + if (lock && mutex_lock_interruptible(lock)) + return -ERESTARTSYS; + ret = vb2_get_unmapped_area(vdev->queue, addr, len, pgoff, flags); + if (lock) + mutex_unlock(lock); + return ret; } EXPORT_SYMBOL_GPL(vb2_fop_get_unmapped_area); #endif |
