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| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2012-02-08 20:02:03 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-02-08 20:02:03 +0100 |
| commit | 37b40adf2d1b4a5e51323be73ccf8ddcf3f15dd3 (patch) | |
| tree | 39c935adb74eccf088dabad743425a822a843910 /block/bsg.c | |
| parent | 07c2bd37350c9b1af71b35d05f16e300a6602948 (diff) | |
| download | lwn-37b40adf2d1b4a5e51323be73ccf8ddcf3f15dd3.tar.gz lwn-37b40adf2d1b4a5e51323be73ccf8ddcf3f15dd3.zip | |
bsg: fix sysfs link remove warning
We create "bsg" link if q->kobj.sd is not NULL, so remove it only
when the same condition is true.
Fixes:
WARNING: at fs/sysfs/inode.c:323 sysfs_hash_and_remove+0x2b/0x77()
sysfs: can not remove 'bsg', no directory
Call Trace:
[<c0429683>] warn_slowpath_common+0x6a/0x7f
[<c0537a68>] ? sysfs_hash_and_remove+0x2b/0x77
[<c042970b>] warn_slowpath_fmt+0x2b/0x2f
[<c0537a68>] sysfs_hash_and_remove+0x2b/0x77
[<c053969a>] sysfs_remove_link+0x20/0x23
[<c05d88f1>] bsg_unregister_queue+0x40/0x6d
[<c0692263>] __scsi_remove_device+0x31/0x9d
[<c069149f>] scsi_forget_host+0x41/0x52
[<c0689fa9>] scsi_remove_host+0x71/0xe0
[<f7de5945>] quiesce_and_remove_host+0x51/0x83 [usb_storage]
[<f7de5a1e>] usb_stor_disconnect+0x18/0x22 [usb_storage]
[<c06c29de>] usb_unbind_interface+0x4e/0x109
[<c067a80f>] __device_release_driver+0x6b/0xa6
[<c067a861>] device_release_driver+0x17/0x22
[<c067a46a>] bus_remove_device+0xd6/0xe6
[<c06785e2>] device_del+0xf2/0x137
[<c06c101f>] usb_disable_device+0x94/0x1a0
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bsg.c')
| -rw-r--r-- | block/bsg.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/bsg.c b/block/bsg.c index 4cf703fd98bb..ff64ae3bacee 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -983,7 +983,8 @@ void bsg_unregister_queue(struct request_queue *q) mutex_lock(&bsg_mutex); idr_remove(&bsg_minor_idr, bcd->minor); - sysfs_remove_link(&q->kobj, "bsg"); + if (q->kobj.sd) + sysfs_remove_link(&q->kobj, "bsg"); device_unregister(bcd->class_dev); bcd->class_dev = NULL; kref_put(&bcd->ref, bsg_kref_release_function); |