diff options
Diffstat (limited to 'drivers/media/video/usbvideo/vicam.c')
| -rw-r--r-- | drivers/media/video/usbvideo/vicam.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/media/video/usbvideo/vicam.c b/drivers/media/video/usbvideo/vicam.c index 2eb45829791..efb878a7402 100644 --- a/drivers/media/video/usbvideo/vicam.c +++ b/drivers/media/video/usbvideo/vicam.c @@ -488,20 +488,24 @@ vicam_open(struct inode *inode, struct file *file) * rely on this fact forever. */ + lock_kernel(); if (cam->open_count > 0) { printk(KERN_INFO "vicam_open called on already opened camera"); + unlock_kernel(); return -EBUSY; } cam->raw_image = kmalloc(VICAM_MAX_READ_SIZE, GFP_KERNEL); if (!cam->raw_image) { + unlock_kernel(); return -ENOMEM; } cam->framebuf = rvmalloc(VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); if (!cam->framebuf) { kfree(cam->raw_image); + unlock_kernel(); return -ENOMEM; } @@ -509,6 +513,7 @@ vicam_open(struct inode *inode, struct file *file) if (!cam->cntrlbuf) { kfree(cam->raw_image); rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); + unlock_kernel(); return -ENOMEM; } @@ -526,6 +531,7 @@ vicam_open(struct inode *inode, struct file *file) cam->open_count++; file->private_data = cam; + unlock_kernel(); return 0; } |