diff options
Diffstat (limited to 'drivers/media/video/pms.c')
-rw-r--r-- | drivers/media/video/pms.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/drivers/media/video/pms.c b/drivers/media/video/pms.c index 9e6448639480..05ca55939e77 100644 --- a/drivers/media/video/pms.c +++ b/drivers/media/video/pms.c @@ -30,6 +30,8 @@ #include <asm/io.h> #include <linux/sched.h> #include <linux/videodev.h> +#include <linux/mutex.h> + #include <asm/uaccess.h> @@ -44,7 +46,7 @@ struct pms_device struct video_picture picture; int height; int width; - struct semaphore lock; + struct mutex lock; }; struct i2c_info @@ -724,10 +726,10 @@ static int pms_do_ioctl(struct inode *inode, struct file *file, struct video_channel *v = arg; if(v->channel<0 || v->channel>3) return -EINVAL; - down(&pd->lock); + mutex_lock(&pd->lock); pms_videosource(v->channel&1); pms_vcrinput(v->channel>>1); - up(&pd->lock); + mutex_unlock(&pd->lock); return 0; } case VIDIOCGTUNER: @@ -761,7 +763,7 @@ static int pms_do_ioctl(struct inode *inode, struct file *file, struct video_tuner *v = arg; if(v->tuner) return -EINVAL; - down(&pd->lock); + mutex_lock(&pd->lock); switch(v->mode) { case VIDEO_MODE_AUTO: @@ -785,10 +787,10 @@ static int pms_do_ioctl(struct inode *inode, struct file *file, pms_format(2); break; default: - up(&pd->lock); + mutex_unlock(&pd->lock); return -EINVAL; } - up(&pd->lock); + mutex_unlock(&pd->lock); return 0; } case VIDIOCGPICT: @@ -809,12 +811,12 @@ static int pms_do_ioctl(struct inode *inode, struct file *file, * Now load the card. */ - down(&pd->lock); + mutex_lock(&pd->lock); pms_brightness(p->brightness>>8); pms_hue(p->hue>>8); pms_colour(p->colour>>8); pms_contrast(p->contrast>>8); - up(&pd->lock); + mutex_unlock(&pd->lock); return 0; } case VIDIOCSWIN: @@ -830,9 +832,9 @@ static int pms_do_ioctl(struct inode *inode, struct file *file, return -EINVAL; pd->width=vw->width; pd->height=vw->height; - down(&pd->lock); + mutex_lock(&pd->lock); pms_resolution(pd->width, pd->height); - up(&pd->lock); /* Ok we figured out what to use from our wide choice */ + mutex_unlock(&pd->lock); /* Ok we figured out what to use from our wide choice */ return 0; } case VIDIOCGWIN: @@ -872,9 +874,9 @@ static ssize_t pms_read(struct file *file, char __user *buf, struct pms_device *pd=(struct pms_device *)v; int len; - down(&pd->lock); + mutex_lock(&pd->lock); len=pms_capture(pd, buf, (pd->picture.depth==16)?0:1,count); - up(&pd->lock); + mutex_unlock(&pd->lock); return len; } @@ -1029,7 +1031,7 @@ static int __init init_pms_cards(void) return -ENODEV; } memcpy(&pms_device, &pms_template, sizeof(pms_template)); - init_MUTEX(&pms_device.lock); + mutex_init(&pms_device.lock); pms_device.height=240; pms_device.width=320; pms_swsense(75); |