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| author | James Bottomley <JBottomley@Parallels.com> | 2013-11-15 14:58:00 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-11 22:34:10 -0800 |
| commit | b232973fafc677185e42ae3f62a65349bf1afc27 (patch) | |
| tree | d43b2e1eca04720d308409457f4de3167a32fa64 /drivers/scsi/g_NCR5380_mmio.c | |
| parent | 8e73078f451fe1d79362db1942f8822ba46bf189 (diff) | |
| download | lwn-b232973fafc677185e42ae3f62a65349bf1afc27.tar.gz lwn-b232973fafc677185e42ae3f62a65349bf1afc27.zip | |
SCSI: enclosure: fix WARN_ON in dual path device removing
commit a1470c7bf3a4676e62e4c0fb204e339399eb5c59 upstream.
Bug report from: wenxiong@linux.vnet.ibm.com
The issue is happened in dual controller configuration. We got the
sysfs warnings when rmmod the ipr module.
enclosure_unregister() in drivers/msic/enclosure.c, call device_unregister()
for each componment deivce, device_unregister() ->device_del()->kobject_del()
->sysfs_remove_dir(). In sysfs_remove_dir(), set kobj->sd = NULL.
For each componment device,
enclosure_component_release()->enclosure_remove_links()->sysfs_remove_link()
in which checking kobj->sd again, it has been set as NULL when doing
device_unregister. So we saw all these sysfs WARNING.
Tested-by: wenxiong@linux.vnet.ibm.com
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi/g_NCR5380_mmio.c')
0 files changed, 0 insertions, 0 deletions