Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (583 commits)
  V4L/DVB (10130): use USB API functions rather than constants
  V4L/DVB (10129): dvb: remove deprecated use of RW_LOCK_UNLOCKED in frontends
  V4L/DVB (10128): modify V4L documentation to be a valid XHTML
  V4L/DVB (10127): stv06xx: Avoid having y unitialized
  V4L/DVB (10125): em28xx: Don't do AC97 vendor detection for i2s audio devices
  V4L/DVB (10124): em28xx: expand output formats available
  V4L/DVB (10123): em28xx: fix reversed definitions of I2S audio modes
  V4L/DVB (10122): em28xx: don't load em28xx-alsa for em2870 based devices
  V4L/DVB (10121): em28xx: remove worthless Pinnacle PCTV HD Mini 80e device profile
  V4L/DVB (10120): em28xx: remove redundant Pinnacle Dazzle DVC 100 profile
  V4L/DVB (10119): em28xx: fix corrupted XCLK value
  V4L/DVB (10118): zoran: fix warning for a variable not used
  V4L/DVB (10116): af9013: Fix gcc false warnings
  V4L/DVB (10111a): usbvideo.h: remove an useless blank line
  V4L/DVB (10111): quickcam_messenger.c: fix a warning
  V4L/DVB (10110): v4l2-ioctl: Fix warnings when using .unlocked_ioctl = __video_ioctl2
  V4L/DVB (10109): anysee: Fix usage of an unitialized function
  V4L/DVB (10104): uvcvideo: Add support for video output devices
  V4L/DVB (10102): uvcvideo: Ignore interrupt endpoint for built-in iSight webcams.
  V4L/DVB (10101): uvcvideo: Fix bulk URB processing when the header is erroneous
  ...

1 files changed, 36 insertions, 15 deletions

diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index a0a6b41c5e0..0a88d1d17d3 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -25,6 +25,12 @@
 #define VFL_TYPE_MAX		4
 
 struct v4l2_ioctl_callbacks;
+struct v4l2_device;
+
+/* Flag to mark the video_device struct as unregistered.
+   Drivers can set this flag if they want to block all future
+   device access. It is set by video_unregister_device. */
+#define V4L2_FL_UNREGISTERED	(0)
 
 /*
  * Newer version of video_device, handled by videodev2.c
@@ -39,15 +45,20 @@ struct video_device
 
 	/* sysfs */
 	struct device dev;		/* v4l device */
-	struct cdev cdev;		/* character device */
-	void (*cdev_release)(struct kobject *kobj);
+	struct cdev *cdev;		/* character device */
+
+	/* Set either parent or v4l2_dev if your driver uses v4l2_device */
 	struct device *parent;		/* device parent */
+	struct v4l2_device *v4l2_dev;	/* v4l2_device parent */
 
 	/* device info */
 	char name[32];
 	int vfl_type;
+	/* 'minor' is set to -1 if the registration failed */
 	int minor;
 	u16 num;
+	/* use bitops to set/clear/test flags */
+	unsigned long flags;
 	/* attribute to differentiate multiple indices on one physical device */
 	int index;
 
@@ -58,7 +69,7 @@ struct video_device
 	v4l2_std_id current_norm;	/* Current tvnorm */
 
 	/* callbacks */
-	void (*release)(struct video_device *vfd);
+	void (*release)(struct video_device *vdev);
 
 	/* ioctl callbacks */
 	const struct v4l2_ioctl_ops *ioctl_ops;
@@ -67,36 +78,41 @@ struct video_device
 /* dev to video-device */
 #define to_video_device(cd) container_of(cd, struct video_device, dev)
 
-/* Register and unregister devices. Note that if video_register_device fails,
+/* Register video devices. Note that if video_register_device fails,
    the release() callback of the video_device structure is *not* called, so
    the caller is responsible for freeing any data. Usually that means that
-   you call video_device_release() on failure. */
-int __must_check video_register_device(struct video_device *vfd, int type, int nr);
-int __must_check video_register_device_index(struct video_device *vfd,
+   you call video_device_release() on failure.
+
+   Also note that vdev->minor is set to -1 if the registration failed. */
+int __must_check video_register_device(struct video_device *vdev, int type, int nr);
+int __must_check video_register_device_index(struct video_device *vdev,
 						int type, int nr, int index);
-void video_unregister_device(struct video_device *vfd);
+
+/* Unregister video devices. Will do nothing if vdev == NULL or
+   vdev->minor < 0. */
+void video_unregister_device(struct video_device *vdev);
 
 /* helper functions to alloc/release struct video_device, the
    latter can also be used for video_device->release(). */
 struct video_device * __must_check video_device_alloc(void);
 
-/* this release function frees the vfd pointer */
-void video_device_release(struct video_device *vfd);
+/* this release function frees the vdev pointer */
+void video_device_release(struct video_device *vdev);
 
 /* this release function does nothing, use when the video_device is a
    static global struct. Note that having a static video_device is
    a dubious construction at best. */
-void video_device_release_empty(struct video_device *vfd);
+void video_device_release_empty(struct video_device *vdev);
 
 /* helper functions to access driver private data. */
-static inline void *video_get_drvdata(struct video_device *dev)
+static inline void *video_get_drvdata(struct video_device *vdev)
 {
-	return dev_get_drvdata(&dev->dev);
+	return dev_get_drvdata(&vdev->dev);
 }
 
-static inline void video_set_drvdata(struct video_device *dev, void *data)
+static inline void video_set_drvdata(struct video_device *vdev, void *data)
 {
-	dev_set_drvdata(&dev->dev, data);
+	dev_set_drvdata(&vdev->dev, data);
 }
 
 struct video_device *video_devdata(struct file *file);
@@ -108,4 +124,9 @@ static inline void *video_drvdata(struct file *file)
 	return video_get_drvdata(video_devdata(file));
 }
 
+static inline int video_is_unregistered(struct video_device *vdev)
+{
+	return test_bit(V4L2_FL_UNREGISTERED, &vdev->flags);
+}
+
 #endif /* _V4L2_DEV_H */