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[SCSI] bsg: fix bsg_unregister_queue 

scsi_sysfs_add_sdev ignores the bsg_register_queue failure, so
bsg_unregister_queue must check whether the queue has a bsg device.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
FUJITA Tomonori 2007-07-21 13:23:25 +09:00 committed by James Bottomley
parent 39dca558a5
commit df468820b6
1 changed files with 2 additions and 1 deletions
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3
block/bsg.c
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@ -932,7 +932,8 @@ void bsg_unregister_queue(struct request_queue *q)
{
struct bsg_class_device *bcd = &q->bsg_dev;
WARN_ON(!bcd->class_dev);
if (!bcd->class_dev)
return;
mutex_lock(&bsg_mutex);
sysfs_remove_link(&q->kobj, "bsg");