diff options
Diffstat (limited to 'drivers/media/video/v4l2-dev.c')
| -rw-r--r-- | drivers/media/video/v4l2-dev.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 0ca7978654b5..03f7f4670e9b 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -25,7 +25,6 @@ #include <linux/init.h> #include <linux/kmod.h> #include <linux/slab.h> -#include <linux/smp_lock.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -247,10 +246,12 @@ static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) mutex_unlock(vdev->lock); } else if (vdev->fops->ioctl) { /* TODO: convert all drivers to unlocked_ioctl */ - lock_kernel(); + static DEFINE_MUTEX(v4l2_ioctl_mutex); + + mutex_lock(&v4l2_ioctl_mutex); if (video_is_registered(vdev)) ret = vdev->fops->ioctl(filp, cmd, arg); - unlock_kernel(); + mutex_unlock(&v4l2_ioctl_mutex); } else ret = -ENOTTY; |