diff options
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-core.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index bc08a829bc13..167c1d93bd4c 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -3416,6 +3416,8 @@ ssize_t vb2_fop_write(struct file *file, const char __user *buf, struct mutex *lock = vdev->queue->lock ? vdev->queue->lock : vdev->lock; int err = -EBUSY; + if (!(vdev->queue->io_modes & VB2_WRITE)) + return -EINVAL; if (lock && mutex_lock_interruptible(lock)) return -ERESTARTSYS; if (vb2_queue_is_busy(vdev, file)) @@ -3438,6 +3440,8 @@ ssize_t vb2_fop_read(struct file *file, char __user *buf, struct mutex *lock = vdev->queue->lock ? vdev->queue->lock : vdev->lock; int err = -EBUSY; + if (!(vdev->queue->io_modes & VB2_READ)) + return -EINVAL; if (lock && mutex_lock_interruptible(lock)) return -ERESTARTSYS; if (vb2_queue_is_busy(vdev, file)) |