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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2009-11-27 13:57:22 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-16 00:17:55 -0200
commit957b4aa9f786cf04585a690a2e4c3dc867ce80e9 (patch)
treef99f1350ab853529cdf586225f44490d8bcf1e34 /drivers/media
parent0fda5d4420fe1d6a19189386b6bc6532c97a7e0e (diff)
V4L/DVB (13552): v4l: Replace video_is_unregistered with video_is_registered
Replace the video_is_unregistered function by a video_is_registered function. The V4L2_FL_UNREGISTERED flag is replaced by a V4L2_FL_REGISTERED flag. This change makes the video_is_registered function return coherent results when called on an initialize but not yet registered video_device instance. The function can now be used instead of checking video_device::minor. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/video/hdpvr/hdpvr-video.c2
-rw-r--r--drivers/media/video/v4l2-dev.c18
2 files changed, 10 insertions, 10 deletions
diff --git a/drivers/media/video/hdpvr/hdpvr-video.c b/drivers/media/video/hdpvr/hdpvr-video.c
index b5439cabb381..fdd782039e9d 100644
--- a/drivers/media/video/hdpvr/hdpvr-video.c
+++ b/drivers/media/video/hdpvr/hdpvr-video.c
@@ -523,7 +523,7 @@ static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
mutex_lock(&dev->io_mutex);
- if (video_is_unregistered(dev->video_dev)) {
+ if (!video_is_registered(dev->video_dev)) {
mutex_unlock(&dev->io_mutex);
return -EIO;
}
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index aa3e0f9aa3bf..709069916068 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -189,7 +189,7 @@ static ssize_t v4l2_read(struct file *filp, char __user *buf,
if (!vdev->fops->read)
return -EINVAL;
- if (video_is_unregistered(vdev))
+ if (!video_is_registered(vdev))
return -EIO;
return vdev->fops->read(filp, buf, sz, off);
}
@@ -201,7 +201,7 @@ static ssize_t v4l2_write(struct file *filp, const char __user *buf,
if (!vdev->fops->write)
return -EINVAL;
- if (video_is_unregistered(vdev))
+ if (!video_is_registered(vdev))
return -EIO;
return vdev->fops->write(filp, buf, sz, off);
}
@@ -210,7 +210,7 @@ static unsigned int v4l2_poll(struct file *filp, struct poll_table_struct *poll)
{
struct video_device *vdev = video_devdata(filp);
- if (!vdev->fops->poll || video_is_unregistered(vdev))
+ if (!vdev->fops->poll || !video_is_registered(vdev))
return DEFAULT_POLLMASK;
return vdev->fops->poll(filp, poll);
}
@@ -250,7 +250,7 @@ static unsigned long v4l2_get_unmapped_area(struct file *filp,
if (!vdev->fops->get_unmapped_area)
return -ENOSYS;
- if (video_is_unregistered(vdev))
+ if (!video_is_registered(vdev))
return -ENODEV;
return vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);
}
@@ -260,8 +260,7 @@ static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm)
{
struct video_device *vdev = video_devdata(filp);
- if (!vdev->fops->mmap ||
- video_is_unregistered(vdev))
+ if (!vdev->fops->mmap || !video_is_registered(vdev))
return -ENODEV;
return vdev->fops->mmap(filp, vm);
}
@@ -277,7 +276,7 @@ static int v4l2_open(struct inode *inode, struct file *filp)
vdev = video_devdata(filp);
/* return ENODEV if the video device has been removed
already or if it is not registered anymore. */
- if (vdev == NULL || video_is_unregistered(vdev)) {
+ if (vdev == NULL || !video_is_registered(vdev)) {
mutex_unlock(&videodev_lock);
return -ENODEV;
}
@@ -555,6 +554,7 @@ static int __video_register_device(struct video_device *vdev, int type, int nr,
name_base, nr, video_device_node_name(vdev));
/* Part 5: Activate this minor. The char device can now be used. */
+ set_bit(V4L2_FL_REGISTERED, &vdev->flags);
mutex_lock(&videodev_lock);
video_device[vdev->minor] = vdev;
mutex_unlock(&videodev_lock);
@@ -593,11 +593,11 @@ EXPORT_SYMBOL(video_register_device_no_warn);
void video_unregister_device(struct video_device *vdev)
{
/* Check if vdev was ever registered at all */
- if (!vdev || vdev->minor < 0)
+ if (!vdev || !video_is_registered(vdev))
return;
mutex_lock(&videodev_lock);
- set_bit(V4L2_FL_UNREGISTERED, &vdev->flags);
+ clear_bit(V4L2_FL_REGISTERED, &vdev->flags);
mutex_unlock(&videodev_lock);
device_unregister(&vdev->dev);
}