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| author | FUJITA Tomonori <tomof@acm.org> | 2008-01-23 23:34:35 +0900 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-01-23 13:44:47 -0600 |
| commit | a3d2c2e8f5e01e185013d8f944c0a26fdc558ad8 (patch) | |
| tree | 9270b0630358e2f8a014415d84db98c49770211d /drivers/scsi/ch.c | |
| parent | a43cf0f3511585493e3c948f7ec62f659486d0b3 (diff) | |
| download | linux-3.10-a3d2c2e8f5e01e185013d8f944c0a26fdc558ad8.tar.gz linux-3.10-a3d2c2e8f5e01e185013d8f944c0a26fdc558ad8.tar.bz2 linux-3.10-a3d2c2e8f5e01e185013d8f944c0a26fdc558ad8.zip | |
[SCSI] ch: handle class_device_create failure properly
When class_device_create fails, ch_probe needs to fail too.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/ch.c')
| -rw-r--r-- | drivers/scsi/ch.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index cead0f5379c..765f2fc001a 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -913,29 +913,37 @@ static long ch_ioctl_compat(struct file * file, static int ch_probe(struct device *dev) { struct scsi_device *sd = to_scsi_device(dev); + struct class_device *class_dev; scsi_changer *ch; - + if (sd->type != TYPE_MEDIUM_CHANGER) return -ENODEV; - + ch = kzalloc(sizeof(*ch), GFP_KERNEL); if (NULL == ch) return -ENOMEM; ch->minor = ch_devcount; sprintf(ch->name,"ch%d",ch->minor); + + class_dev = class_device_create(ch_sysfs_class, NULL, + MKDEV(SCSI_CHANGER_MAJOR, ch->minor), + dev, "s%s", ch->name); + if (IS_ERR(class_dev)) { + printk(KERN_WARNING "ch%d: class_device_create failed\n", + ch->minor); + kfree(ch); + return PTR_ERR(class_dev); + } + mutex_init(&ch->lock); ch->device = sd; ch_readconfig(ch); if (init) ch_init_elem(ch); - class_device_create(ch_sysfs_class, NULL, - MKDEV(SCSI_CHANGER_MAJOR,ch->minor), - dev, "s%s", ch->name); - sdev_printk(KERN_INFO, sd, "Attached scsi changer %s\n", ch->name); - + spin_lock(&ch_devlist_lock); list_add_tail(&ch->list,&ch_devlist); ch_devcount++; |