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cdrom: make unregister_cdrom() return void

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Now unregister_cdrom() always returns 0.
Make it return void and update all callers that check the return value.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Akinobu Mita 2008-03-26 12:09:02 +01:00 committed by Jens Axboe
parent 7fd097d42b
commit 0a0c4114df
6 changed files with 9 additions and 12 deletions
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2
Documentation/cdrom/cdrom-standard.tex
View file

@ -777,7 +777,7 @@ Note that a driver must have one static structure, $<device>_dops$, while
it may have as many structures $<device>_info$ as there are minor devices
active. $Register_cdrom()$ builds a linked list from these.
\subsection{$Int\ unregister_cdrom(struct\ cdrom_device_info * cdi)$}
\subsection{$Void\ unregister_cdrom(struct\ cdrom_device_info * cdi)$}
Unregistering device $cdi$ with minor number $MINOR(cdi\to dev)$ removes
the minor device from the list. If it was the last registered minor for

3
drivers/cdrom/cdrom.c
View file

@ -442,7 +442,7 @@ int register_cdrom(struct cdrom_device_info *cdi)
}
#undef ENSURE
int unregister_cdrom(struct cdrom_device_info *cdi)
void unregister_cdrom(struct cdrom_device_info *cdi)
{
cdinfo(CD_OPEN, "entering unregister_cdrom\n");
@ -455,7 +455,6 @@ int unregister_cdrom(struct cdrom_device_info *cdi)
cdi->ops->n_minors--;
cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
return 0;
}
int cdrom_get_media_event(struct cdrom_device_info *cdi,

4
drivers/cdrom/gdrom.c
View file

@ -827,7 +827,9 @@ static int __devexit remove_gdrom(struct platform_device *devptr)
del_gendisk(gd.disk);
if (gdrom_major)
unregister_blkdev(gdrom_major, GDROM_DEV_NAME);
return unregister_cdrom(gd.cd_info);
unregister_cdrom(gd.cd_info);
return 0;
}
static struct platform_driver gdrom_driver = {

5
drivers/cdrom/viocd.c
View file

@ -650,10 +650,7 @@ static int viocd_remove(struct vio_dev *vdev)
{
struct disk_info *d = &viocd_diskinfo[vdev->unit_address];
if (unregister_cdrom(&d->viocd_info) != 0)
printk(VIOCD_KERN_WARNING
"Cannot unregister viocd CD-ROM %s!\n",
d->viocd_info.name);
unregister_cdrom(&d->viocd_info);
del_gendisk(d->viocd_disk);
blk_cleanup_queue(d->viocd_disk->queue);
put_disk(d->viocd_disk);

5
drivers/ide/ide-cd.c
View file

@ -2032,9 +2032,8 @@ static void ide_cd_release(struct kref *kref)
kfree(info->buffer);
kfree(info->toc);
if (devinfo->handle == drive && unregister_cdrom(devinfo))
printk(KERN_ERR "%s: %s failed to unregister device from the cdrom "
"driver.\n", __FUNCTION__, drive->name);
if (devinfo->handle == drive)
unregister_cdrom(devinfo);
drive->dsc_overlap = 0;
drive->driver_data = NULL;
blk_queue_prep_rq(drive->queue, NULL);

2
include/linux/cdrom.h
View file

@ -995,7 +995,7 @@ extern int cdrom_ioctl(struct file *file, struct cdrom_device_info *cdi,
extern int cdrom_media_changed(struct cdrom_device_info *);
extern int register_cdrom(struct cdrom_device_info *cdi);
extern int unregister_cdrom(struct cdrom_device_info *cdi);
extern void unregister_cdrom(struct cdrom_device_info *cdi);
typedef struct {
int data;