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path: root/drivers/media/video/v4l2-dev.c
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Diffstat (limited to 'drivers/media/video/v4l2-dev.c')
-rw-r--r--drivers/media/video/v4l2-dev.c7
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;