diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-16 23:20:01 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-16 23:20:01 -0800 |
commit | d669af9d5afb5bdb629f78d024b35e507465f570 (patch) | |
tree | 711ab23d69098fa05973b69efbd0ae61cc7ff927 /drivers/media/video/videodev.c | |
parent | 2ddb55f091a9c74a297d72b50f8310c0c8ed7d1d (diff) | |
parent | f87d09be8c2c270b83c2ad80d06206a7306e2fa9 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb
Diffstat (limited to 'drivers/media/video/videodev.c')
-rw-r--r-- | drivers/media/video/videodev.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c index d5be25987142..078880e4c8c0 100644 --- a/drivers/media/video/videodev.c +++ b/drivers/media/video/videodev.c @@ -29,7 +29,6 @@ #include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #include <asm/system.h> -#include <asm/semaphore.h> #include <linux/videodev.h> @@ -83,7 +82,7 @@ static struct class video_class = { */ static struct video_device *video_device[VIDEO_NUM_DEVICES]; -static DECLARE_MUTEX(videodev_lock); +static DEFINE_MUTEX(videodev_lock); struct video_device* video_devdata(struct file *file) { @@ -102,15 +101,15 @@ static int video_open(struct inode *inode, struct file *file) if(minor>=VIDEO_NUM_DEVICES) return -ENODEV; - down(&videodev_lock); + mutex_lock(&videodev_lock); vfl=video_device[minor]; if(vfl==NULL) { - up(&videodev_lock); + mutex_unlock(&videodev_lock); request_module("char-major-%d-%d", VIDEO_MAJOR, minor); - down(&videodev_lock); + mutex_lock(&videodev_lock); vfl=video_device[minor]; if (vfl==NULL) { - up(&videodev_lock); + mutex_unlock(&videodev_lock); return -ENODEV; } } @@ -123,7 +122,7 @@ static int video_open(struct inode *inode, struct file *file) file->f_op = fops_get(old_fops); } fops_put(old_fops); - up(&videodev_lock); + mutex_unlock(&videodev_lock); return err; } @@ -304,12 +303,12 @@ int video_register_device(struct video_device *vfd, int type, int nr) } /* pick a minor number */ - down(&videodev_lock); + mutex_lock(&videodev_lock); if (nr >= 0 && nr < end-base) { /* use the one the driver asked for */ i = base+nr; if (NULL != video_device[i]) { - up(&videodev_lock); + mutex_unlock(&videodev_lock); return -ENFILE; } } else { @@ -318,13 +317,13 @@ int video_register_device(struct video_device *vfd, int type, int nr) if (NULL == video_device[i]) break; if (i == end) { - up(&videodev_lock); + mutex_unlock(&videodev_lock); return -ENFILE; } } video_device[i]=vfd; vfd->minor=i; - up(&videodev_lock); + mutex_unlock(&videodev_lock); sprintf(vfd->devfs_name, "v4l/%s%d", name_base, i - base); devfs_mk_cdev(MKDEV(VIDEO_MAJOR, vfd->minor), @@ -362,14 +361,14 @@ int video_register_device(struct video_device *vfd, int type, int nr) void video_unregister_device(struct video_device *vfd) { - down(&videodev_lock); + mutex_lock(&videodev_lock); if(video_device[vfd->minor]!=vfd) panic("videodev: bad unregister"); devfs_remove(vfd->devfs_name); video_device[vfd->minor]=NULL; class_device_unregister(&vfd->class_dev); - up(&videodev_lock); + mutex_unlock(&videodev_lock); } |