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Commit cc4b7e7f authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

[media] v4l2-dev.c: also add debug support for the fops 



Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 2e90c6c3

drivers/media/video/v4l2-dev.c

+24 −1
Original line number Diff line number Diff line
@@ -305,6 +305,9 @@ static ssize_t v4l2_read(struct file *filp, char __user *buf, 
		ret = vdev->fops->read(filp, buf, sz, off);

	if (test_bit(V4L2_FL_LOCK_ALL_FOPS, &vdev->flags))

		mutex_unlock(vdev->lock);

	if (vdev->debug)

		printk(KERN_DEBUG "%s: read: %zd (%d)\n",

			video_device_node_name(vdev), sz, ret);

	return ret;

}
@@ -323,6 +326,9 @@ static ssize_t v4l2_write(struct file *filp, const char __user *buf, 
		ret = vdev->fops->write(filp, buf, sz, off);

	if (test_bit(V4L2_FL_LOCK_ALL_FOPS, &vdev->flags))

		mutex_unlock(vdev->lock);

	if (vdev->debug)

		printk(KERN_DEBUG "%s: write: %zd (%d)\n",

			video_device_node_name(vdev), sz, ret);

	return ret;

}
@@ -339,6 +345,9 @@ static unsigned int v4l2_poll(struct file *filp, struct poll_table_struct *poll) 
		ret = vdev->fops->poll(filp, poll);

	if (test_bit(V4L2_FL_LOCK_ALL_FOPS, &vdev->flags))

		mutex_unlock(vdev->lock);

	if (vdev->debug)

		printk(KERN_DEBUG "%s: poll: %08x\n",

			video_device_node_name(vdev), ret);

	return ret;

}
@@ -403,12 +412,17 @@ static unsigned long v4l2_get_unmapped_area(struct file *filp, 
		unsigned long flags)

{

	struct video_device *vdev = video_devdata(filp);

	int ret;



	if (!vdev->fops->get_unmapped_area)

		return -ENOSYS;

	if (!video_is_registered(vdev))

		return -ENODEV;

	return vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);

	ret = vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);

	if (vdev->debug)

		printk(KERN_DEBUG "%s: get_unmapped_area (%d)\n",

			video_device_node_name(vdev), ret);

	return ret;

}

#endif
@@ -426,6 +440,9 @@ static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm) 
		ret = vdev->fops->mmap(filp, vm);

	if (test_bit(V4L2_FL_LOCK_ALL_FOPS, &vdev->flags))

		mutex_unlock(vdev->lock);

	if (vdev->debug)

		printk(KERN_DEBUG "%s: mmap (%d)\n",

			video_device_node_name(vdev), ret);

	return ret;

}
@@ -464,6 +481,9 @@ static int v4l2_open(struct inode *inode, struct file *filp) 
	/* decrease the refcount in case of an error */

	if (ret)

		video_put(vdev);

	if (vdev->debug)

		printk(KERN_DEBUG "%s: open (%d)\n",

			video_device_node_name(vdev), ret);

	return ret;

}
@@ -483,6 +503,9 @@ static int v4l2_release(struct inode *inode, struct file *filp) 
	/* decrease the refcount unconditionally since the release()

	   return value is ignored. */

	video_put(vdev);

	if (vdev->debug)

		printk(KERN_DEBUG "%s: release\n",

			video_device_node_name(vdev));

	return ret;

}