V4L/DVB (3568g): sem2mutex: zoran

[cascardo/linux.git] / drivers / media / video / vino.c

diff --git a/drivers/media/video/vino.c b/drivers/media/video/vino.c
index c8fd823..0229819 100644 (file)
--- a/drivers/media/video/vino.c
+++ b/drivers/media/video/vino.c
@@ -42,6 +42,7 @@
 #include <linux/videodev.h>
 #include <linux/videodev2.h>
 #include <linux/video_decoder.h>
+#include <linux/mutex.h>
 
 #include <asm/paccess.h>
 #include <asm/io.h>
@@ -245,7 +246,7 @@ struct vino_framebuffer_queue {
        struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
 
        spinlock_t queue_lock;
-       struct semaphore queue_sem;
+       struct mutex queue_mutex;
        wait_queue_head_t frame_wait_queue;
 };
 
@@ -283,7 +284,7 @@ struct vino_channel_settings {
        /* the driver is currently processing the queue */
        int capturing;
 
-       struct semaphore sem;
+       struct mutex mutex;
        spinlock_t capture_lock;
 
        unsigned int users;
@@ -1131,11 +1132,11 @@ static void vino_queue_free(struct vino_framebuffer_queue *q)
        if (q->type != VINO_MEMORY_MMAP)
                return;
 
-       down(&q->queue_sem);
+       mutex_lock(&q->queue_mutex);
 
        vino_queue_free_with_count(q, q->length);
 
-       up(&q->queue_sem);
+       mutex_unlock(&q->queue_mutex);
 }
 
 static int vino_queue_init(struct vino_framebuffer_queue *q,
@@ -1159,7 +1160,7 @@ static int vino_queue_init(struct vino_framebuffer_queue *q,
        if (*length < 1)
                return -EINVAL;
 
-       down(&q->queue_sem);
+       mutex_lock(&q->queue_mutex);
 
        if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
                *length = VINO_FRAMEBUFFER_COUNT_MAX;
@@ -1211,7 +1212,7 @@ static int vino_queue_init(struct vino_framebuffer_queue *q,
                q->magic = VINO_QUEUE_MAGIC;
        }
 
-       up(&q->queue_sem);
+       mutex_unlock(&q->queue_mutex);
 
        return ret;
 }
@@ -4045,7 +4046,7 @@ static int vino_open(struct inode *inode, struct file *file)
        dprintk("open(): channel = %c\n",
               (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
 
-       down(&vcs->sem);
+       mutex_lock(&vcs->mutex);
 
        if (vcs->users) {
                dprintk("open(): driver busy\n");
@@ -4062,7 +4063,7 @@ static int vino_open(struct inode *inode, struct file *file)
        vcs->users++;
 
  out:
-       up(&vcs->sem);
+       mutex_unlock(&vcs->mutex);
 
        dprintk("open(): %s!\n", ret ? "failed" : "complete");
 
@@ -4075,7 +4076,7 @@ static int vino_close(struct inode *inode, struct file *file)
        struct vino_channel_settings *vcs = video_get_drvdata(dev);
        dprintk("close():\n");
 
-       down(&vcs->sem);
+       mutex_lock(&vcs->mutex);
 
        vcs->users--;
 
@@ -4087,7 +4088,7 @@ static int vino_close(struct inode *inode, struct file *file)
                vino_queue_free(&vcs->fb_queue);
        }
 
-       up(&vcs->sem);
+       mutex_unlock(&vcs->mutex);
 
        return 0;
 }
@@ -4130,7 +4131,7 @@ static int vino_mmap(struct file *file, struct vm_area_struct *vma)
 
        // TODO: reject mmap if already mapped
 
-       if (down_interruptible(&vcs->sem))
+       if (mutex_lock_interruptible(&vcs->mutex))
                return -EINTR;
 
        if (vcs->reading) {
@@ -4214,7 +4215,7 @@ found:
        vma->vm_ops = &vino_vm_ops;
 
 out:
-       up(&vcs->sem);
+       mutex_unlock(&vcs->mutex);
 
        return ret;
 }
@@ -4374,12 +4375,12 @@ static int vino_ioctl(struct inode *inode, struct file *file,
        struct vino_channel_settings *vcs = video_get_drvdata(dev);
        int ret;
 
-       if (down_interruptible(&vcs->sem))
+       if (mutex_lock_interruptible(&vcs->mutex))
                return -EINTR;
 
        ret = video_usercopy(inode, file, cmd, arg, vino_do_ioctl);
 
-       up(&vcs->sem);
+       mutex_unlock(&vcs->mutex);
 
        return ret;
 }
@@ -4564,10 +4565,10 @@ static int vino_init_channel_settings(struct vino_channel_settings *vcs,
 
        vcs->capturing = 0;
 
-       init_MUTEX(&vcs->sem);
+       mutex_init(&vcs->mutex);
        spin_lock_init(&vcs->capture_lock);
 
-       init_MUTEX(&vcs->fb_queue.queue_sem);
+       mutex_init(&vcs->fb_queue.queue_mutex);
        spin_lock_init(&vcs->fb_queue.queue_lock);
        init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);