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path: root/drivers/media/video/cpia2
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Diffstat (limited to 'drivers/media/video/cpia2')
-rw-r--r--drivers/media/video/cpia2/cpia2.h2
-rw-r--r--drivers/media/video/cpia2/cpia2_core.c40
-rw-r--r--drivers/media/video/cpia2/cpia2_v4l.c43
3 files changed, 43 insertions, 42 deletions
diff --git a/drivers/media/video/cpia2/cpia2.h b/drivers/media/video/cpia2/cpia2.h
index 95d3afa..8394283 100644
--- a/drivers/media/video/cpia2/cpia2.h
+++ b/drivers/media/video/cpia2/cpia2.h
@@ -381,7 +381,7 @@ struct cpia2_fh {
struct camera_data {
/* locks */
- struct semaphore busy_lock; /* guard against SMP multithreading */
+ struct mutex busy_lock; /* guard against SMP multithreading */
struct v4l2_prio_state prio;
/* camera status */
diff --git a/drivers/media/video/cpia2/cpia2_core.c b/drivers/media/video/cpia2/cpia2_core.c
index 5dfb242..fd771c7 100644
--- a/drivers/media/video/cpia2/cpia2_core.c
+++ b/drivers/media/video/cpia2/cpia2_core.c
@@ -2238,7 +2238,7 @@ struct camera_data *cpia2_init_camera_struct(void)
memset(cam, 0, sizeof(struct camera_data));
cam->present = 1;
- init_MUTEX(&cam->busy_lock);
+ mutex_init(&cam->busy_lock);
init_waitqueue_head(&cam->wq_stream);
return cam;
@@ -2371,12 +2371,12 @@ long cpia2_read(struct camera_data *cam,
}
/* make this _really_ smp and multithread-safe */
- if (down_interruptible(&cam->busy_lock))
+ if (mutex_lock_interruptible(&cam->busy_lock))
return -ERESTARTSYS;
if (!cam->present) {
LOG("%s: camera removed\n",__FUNCTION__);
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return 0; /* EOF */
}
@@ -2389,34 +2389,34 @@ long cpia2_read(struct camera_data *cam,
/* Copy cam->curbuff in case it changes while we're processing */
frame = cam->curbuff;
if (noblock && frame->status != FRAME_READY) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return -EAGAIN;
}
if(frame->status != FRAME_READY) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
wait_event_interruptible(cam->wq_stream,
!cam->present ||
(frame = cam->curbuff)->status == FRAME_READY);
if (signal_pending(current))
return -ERESTARTSYS;
/* make this _really_ smp and multithread-safe */
- if (down_interruptible(&cam->busy_lock)) {
+ if (mutex_lock_interruptible(&cam->busy_lock)) {
return -ERESTARTSYS;
}
if(!cam->present) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return 0;
}
}
/* copy data to user space */
if (frame->length > count) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return -EFAULT;
}
if (copy_to_user(buf, frame->data, frame->length)) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return -EFAULT;
}
@@ -2424,7 +2424,7 @@ long cpia2_read(struct camera_data *cam,
frame->status = FRAME_EMPTY;
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return count;
}
@@ -2443,10 +2443,10 @@ unsigned int cpia2_poll(struct camera_data *cam, struct file *filp,
return POLLERR;
}
- down(&cam->busy_lock);
+ mutex_lock(&cam->busy_lock);
if(!cam->present) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return POLLHUP;
}
@@ -2456,16 +2456,16 @@ unsigned int cpia2_poll(struct camera_data *cam, struct file *filp,
cam->params.camera_state.stream_mode);
}
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
poll_wait(filp, &cam->wq_stream, wait);
- down(&cam->busy_lock);
+ mutex_lock(&cam->busy_lock);
if(!cam->present)
status = POLLHUP;
else if(cam->curbuff->status == FRAME_READY)
status = POLLIN | POLLRDNORM;
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return status;
}
@@ -2488,18 +2488,18 @@ int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma)
DBG("mmap offset:%ld size:%ld\n", start_offset, size);
/* make this _really_ smp-safe */
- if (down_interruptible(&cam->busy_lock))
+ if (mutex_lock_interruptible(&cam->busy_lock))
return -ERESTARTSYS;
if (!cam->present) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return -ENODEV;
}
if (size > cam->frame_size*cam->num_frames ||
(start_offset % cam->frame_size) != 0 ||
(start_offset+size > cam->frame_size*cam->num_frames)) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return -EINVAL;
}
@@ -2507,7 +2507,7 @@ int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma)
while (size > 0) {
page = kvirt_to_pa(pos);
if (remap_pfn_range(vma, start, page >> PAGE_SHIFT, PAGE_SIZE, PAGE_SHARED)) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return -EAGAIN;
}
start += PAGE_SIZE;
@@ -2519,7 +2519,7 @@ int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma)
}
cam->mmapped = true;
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return 0;
}
diff --git a/drivers/media/video/cpia2/cpia2_v4l.c b/drivers/media/video/cpia2/cpia2_v4l.c
index 08f8be3..481e178 100644
--- a/drivers/media/video/cpia2/cpia2_v4l.c
+++ b/drivers/media/video/cpia2/cpia2_v4l.c
@@ -255,7 +255,7 @@ static int cpia2_open(struct inode *inode, struct file *file)
return -ENODEV;
}
- if(down_interruptible(&cam->busy_lock))
+ if(mutex_lock_interruptible(&cam->busy_lock))
return -ERESTARTSYS;
if(!cam->present) {
@@ -299,7 +299,7 @@ skip_init:
cpia2_dbg_dump_registers(cam);
err_return:
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return retval;
}
@@ -314,7 +314,7 @@ static int cpia2_close(struct inode *inode, struct file *file)
struct camera_data *cam = video_get_drvdata(dev);
struct cpia2_fh *fh = file->private_data;
- down(&cam->busy_lock);
+ mutex_lock(&cam->busy_lock);
if (cam->present &&
(cam->open_count == 1
@@ -347,7 +347,7 @@ static int cpia2_close(struct inode *inode, struct file *file)
}
}
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return 0;
}
@@ -523,11 +523,11 @@ static int sync(struct camera_data *cam, int frame_nr)
return 0;
}
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
wait_event_interruptible(cam->wq_stream,
!cam->streaming ||
frame->status == FRAME_READY);
- down(&cam->busy_lock);
+ mutex_lock(&cam->busy_lock);
if (signal_pending(current))
return -ERESTARTSYS;
if(!cam->present)
@@ -1544,11 +1544,11 @@ static int ioctl_dqbuf(void *arg,struct camera_data *cam, struct file *file)
if(frame < 0) {
/* Wait for a frame to become available */
struct framebuf *cb=cam->curbuff;
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
wait_event_interruptible(cam->wq_stream,
!cam->present ||
(cb=cam->curbuff)->status == FRAME_READY);
- down(&cam->busy_lock);
+ mutex_lock(&cam->busy_lock);
if (signal_pending(current))
return -ERESTARTSYS;
if(!cam->present)
@@ -1591,11 +1591,11 @@ static int cpia2_do_ioctl(struct inode *inode, struct file *file,
return -ENOTTY;
/* make this _really_ smp-safe */
- if (down_interruptible(&cam->busy_lock))
+ if (mutex_lock_interruptible(&cam->busy_lock))
return -ERESTARTSYS;
if (!cam->present) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return -ENODEV;
}
@@ -1608,7 +1608,7 @@ static int cpia2_do_ioctl(struct inode *inode, struct file *file,
struct cpia2_fh *fh = file->private_data;
retval = v4l2_prio_check(&cam->prio, &fh->prio);
if(retval) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return retval;
}
break;
@@ -1618,7 +1618,7 @@ static int cpia2_do_ioctl(struct inode *inode, struct file *file,
{
struct cpia2_fh *fh = file->private_data;
if(fh->prio != V4L2_PRIORITY_RECORD) {
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return -EBUSY;
}
break;
@@ -1847,7 +1847,7 @@ static int cpia2_do_ioctl(struct inode *inode, struct file *file,
break;
}
- up(&cam->busy_lock);
+ mutex_unlock(&cam->busy_lock);
return retval;
}
@@ -1924,14 +1924,15 @@ static void reset_camera_struct_v4l(struct camera_data *cam)
* The v4l video device structure initialized for this device
***/
static struct file_operations fops_template = {
- .owner= THIS_MODULE,
- .open= cpia2_open,
- .release= cpia2_close,
- .read= cpia2_v4l_read,
- .poll= cpia2_v4l_poll,
- .ioctl= cpia2_ioctl,
- .llseek= no_llseek,
- .mmap= cpia2_mmap,
+ .owner = THIS_MODULE,
+ .open = cpia2_open,
+ .release = cpia2_close,
+ .read = cpia2_v4l_read,
+ .poll = cpia2_v4l_poll,
+ .ioctl = cpia2_ioctl,
+ .llseek = no_llseek,
+ .compat_ioctl = v4l_compat_ioctl32,
+ .mmap = cpia2_mmap,
};
static struct video_device cpia2_template = {
generated by cgit v0.10.2 at 2024-11-10 04:36:19 (GMT)