[PATCH] V4L: Fixes maximum number of VBI devices
- Increases the minor number limitation for vbi devices from 223 to 255.
This is in agreement with the minor number allocation specified in
Documentation/devices.txt.
- Without this patch it is not possible to use more than 5 Hauppauge
WinTV-PVR 350 cards since each of these allocate 3 vbi devices.
Signed-of-by: Sigmund Augdal Helberg <sigmund@snap.tv>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index 83c49f9..6de5b00 100644
--- a/drivers/media/video/videodev.c
+++ b/drivers/media/video/videodev.c
@@ -76,14 +76,14 @@
}
static struct class video_class = {
- .name = VIDEO_NAME,
+ .name = VIDEO_NAME,
.release = video_release,
};
/*
- * Active devices
+ * Active devices
*/
-
+
static struct video_device *video_device[VIDEO_NUM_DEVICES];
static DECLARE_MUTEX(videodev_lock);
@@ -101,7 +101,7 @@
int err = 0;
struct video_device *vfl;
struct file_operations *old_fops;
-
+
if(minor>=VIDEO_NUM_DEVICES)
return -ENODEV;
down(&videodev_lock);
@@ -189,7 +189,7 @@
return -ENOMEM;
parg = mbuf;
}
-
+
err = -EFAULT;
if (_IOC_DIR(cmd) & _IOC_WRITE)
if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
@@ -240,7 +240,7 @@
int video_exclusive_release(struct inode *inode, struct file *file)
{
struct video_device *vfl = video_devdata(file);
-
+
vfl->users--;
return 0;
}
@@ -253,7 +253,7 @@
* @type: type of device to register
* @nr: which device number (0 == /dev/video0, 1 == /dev/video1, ...
* -1 == first free)
- *
+ *
* The registration code assigns minor numbers based on the type
* requested. -ENFILE is returned in all the device slots for this
* category are full. If not then the minor field is set and the
@@ -269,7 +269,7 @@
*
* %VFL_TYPE_VBI - Vertical blank data (undecoded)
*
- * %VFL_TYPE_RADIO - A radio card
+ * %VFL_TYPE_RADIO - A radio card
*/
int video_register_device(struct video_device *vfd, int type, int nr)
@@ -278,7 +278,7 @@
int base;
int end;
char *name_base;
-
+
switch(type)
{
case VFL_TYPE_GRABBER:
@@ -293,7 +293,7 @@
break;
case VFL_TYPE_VBI:
base=224;
- end=240;
+ end=256;
name_base = "vbi";
break;
case VFL_TYPE_RADIO:
@@ -334,7 +334,7 @@
init_MUTEX(&vfd->lock);
/* sysfs class */
- memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
+ memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
if (vfd->dev)
vfd->class_dev.dev = vfd->dev;
vfd->class_dev.class = &video_class;
@@ -360,7 +360,7 @@
* This unregisters the passed device and deassigns the minor
* number. Future open calls will be met with errors.
*/
-
+
void video_unregister_device(struct video_device *vfd)
{
down(&videodev_lock);
@@ -384,7 +384,7 @@
/*
* Initialise video for linux
*/
-
+
static int __init videodev_init(void)
{
int ret;