diff options
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvbdev.c')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvbdev.c | 142 |
1 files changed, 71 insertions, 71 deletions
diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c index 477b4fa56430..a4aee8665854 100644 --- a/drivers/media/dvb/dvb-core/dvbdev.c +++ b/drivers/media/dvb/dvb-core/dvbdev.c @@ -47,7 +47,7 @@ static LIST_HEAD(dvb_adapter_list); static DECLARE_MUTEX(dvbdev_register_lock); static const char * const dnames[] = { - "video", "audio", "sec", "frontend", "demux", "dvr", "ca", + "video", "audio", "sec", "frontend", "demux", "dvr", "ca", "net", "osd" }; @@ -90,15 +90,15 @@ static int dvb_device_open(struct inode *inode, struct file *file) file->private_data = dvbdev; old_fops = file->f_op; - file->f_op = fops_get(dvbdev->fops); - if(file->f_op->open) - err = file->f_op->open(inode,file); - if (err) { - fops_put(file->f_op); - file->f_op = fops_get(old_fops); - } - fops_put(old_fops); - return err; + file->f_op = fops_get(dvbdev->fops); + if(file->f_op->open) + err = file->f_op->open(inode,file); + if (err) { + fops_put(file->f_op); + file->f_op = fops_get(old_fops); + } + fops_put(old_fops); + return err; } return -ENODEV; } @@ -117,21 +117,21 @@ static struct cdev dvb_device_cdev = { int dvb_generic_open(struct inode *inode, struct file *file) { - struct dvb_device *dvbdev = file->private_data; + struct dvb_device *dvbdev = file->private_data; - if (!dvbdev) - return -ENODEV; + if (!dvbdev) + return -ENODEV; if (!dvbdev->users) - return -EBUSY; + return -EBUSY; if ((file->f_flags & O_ACCMODE) == O_RDONLY) { - if (!dvbdev->readers) - return -EBUSY; + if (!dvbdev->readers) + return -EBUSY; dvbdev->readers--; } else { - if (!dvbdev->writers) - return -EBUSY; + if (!dvbdev->writers) + return -EBUSY; dvbdev->writers--; } @@ -143,10 +143,10 @@ EXPORT_SYMBOL(dvb_generic_open); int dvb_generic_release(struct inode *inode, struct file *file) { - struct dvb_device *dvbdev = file->private_data; + struct dvb_device *dvbdev = file->private_data; if (!dvbdev) - return -ENODEV; + return -ENODEV; if ((file->f_flags & O_ACCMODE) == O_RDONLY) { dvbdev->readers++; @@ -163,10 +163,10 @@ EXPORT_SYMBOL(dvb_generic_release); int dvb_generic_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { - struct dvb_device *dvbdev = file->private_data; + struct dvb_device *dvbdev = file->private_data; - if (!dvbdev) - return -ENODEV; + if (!dvbdev) + return -ENODEV; if (!dvbdev->kernel_ioctl) return -EINVAL; @@ -334,63 +334,63 @@ EXPORT_SYMBOL(dvb_unregister_adapter); to the v4l "videodev.o" module, which is unnecessary for some cards (ie. the budget dvb-cards don't need the v4l module...) */ int dvb_usercopy(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg, + unsigned int cmd, unsigned long arg, int (*func)(struct inode *inode, struct file *file, unsigned int cmd, void *arg)) { - char sbuf[128]; - void *mbuf = NULL; - void *parg = NULL; - int err = -EINVAL; - - /* Copy arguments into temp kernel buffer */ - switch (_IOC_DIR(cmd)) { - case _IOC_NONE: + char sbuf[128]; + void *mbuf = NULL; + void *parg = NULL; + int err = -EINVAL; + + /* Copy arguments into temp kernel buffer */ + switch (_IOC_DIR(cmd)) { + case _IOC_NONE: /* * For this command, the pointer is actually an integer * argument. */ parg = (void *) arg; break; - case _IOC_READ: /* some v4l ioctls are marked wrong ... */ - case _IOC_WRITE: - case (_IOC_WRITE | _IOC_READ): - if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { - parg = sbuf; - } else { - /* too big to allocate from stack */ - mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL); - if (NULL == mbuf) - return -ENOMEM; - parg = mbuf; - } - - err = -EFAULT; - if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd))) - goto out; - break; - } - - /* call driver */ - if ((err = func(inode, file, cmd, parg)) == -ENOIOCTLCMD) - err = -EINVAL; - - if (err < 0) - goto out; - - /* Copy results into user buffer */ - switch (_IOC_DIR(cmd)) - { - case _IOC_READ: - case (_IOC_WRITE | _IOC_READ): - if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) - err = -EFAULT; - break; - } + case _IOC_READ: /* some v4l ioctls are marked wrong ... */ + case _IOC_WRITE: + case (_IOC_WRITE | _IOC_READ): + if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { + parg = sbuf; + } else { + /* too big to allocate from stack */ + mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL); + if (NULL == mbuf) + return -ENOMEM; + parg = mbuf; + } + + err = -EFAULT; + if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd))) + goto out; + break; + } + + /* call driver */ + if ((err = func(inode, file, cmd, parg)) == -ENOIOCTLCMD) + err = -EINVAL; + + if (err < 0) + goto out; + + /* Copy results into user buffer */ + switch (_IOC_DIR(cmd)) + { + case _IOC_READ: + case (_IOC_WRITE | _IOC_READ): + if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) + err = -EFAULT; + break; + } out: - kfree(mbuf); - return err; + kfree(mbuf); + return err; } static int __init init_dvbdev(void) @@ -427,10 +427,10 @@ error: static void __exit exit_dvbdev(void) { - devfs_remove("dvb"); + devfs_remove("dvb"); class_destroy(dvb_class); cdev_del(&dvb_device_cdev); - unregister_chrdev_region(MKDEV(DVB_MAJOR, 0), MAX_DVB_MINORS); + unregister_chrdev_region(MKDEV(DVB_MAJOR, 0), MAX_DVB_MINORS); } module_init(init_dvbdev); 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