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| author | Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> | 2013-10-11 15:36:25 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-16 18:42:41 -0700 |
| commit | a37f86305c80f441b8b99dae7c19d3f9d2effc15 (patch) | |
| tree | 98ba5fa9043c6e141630e205cb84fcbcfb3d0225 /arch | |
| parent | 15c03dd4859ab16f9212238f29dd315654aa94f6 (diff) | |
driver core: Release device_hotplug_lock when store_mem_state returns EINVAL
When inserting a wrong value to /sys/devices/system/memory/memoryX/state file,
following messages are shown. And device_hotplug_lock is never released.
================================================
[ BUG: lock held when returning to user space! ]
3.12.0-rc4-debug+ #3 Tainted: G W
------------------------------------------------
bash/6442 is leaving the kernel with locks still held!
1 lock held by bash/6442:
#0: (device_hotplug_lock){+.+.+.}, at: [<ffffffff8146cbb5>] lock_device_hotplug_sysfs+0x15/0x50
This issue was introdued by commit fa2be40 (drivers: base: use standard
device online/offline for state change).
This patch releases device_hotplug_lcok when store_mem_state returns EINVAL.
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
CC: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions