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[S390] dcssblk: fix race in dcssblk_add_store()
authorGerald Schaefer <gerald.schaefer@de.ibm.com>
Thu, 21 Aug 2008 17:46:40 +0000 (19:46 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 21 Aug 2008 17:46:42 +0000 (19:46 +0200)
commit04f64b5756872b474d9429e3b6987ada10bb8012
tree3a772f76a2fdbd6e570611202736b1f53b2e4c2dtree | snapshot
parent91c36919a456589f4f073671474a1f899e0d3c2bcommit | diff
[S390] dcssblk: fix race in dcssblk_add_store()

Concurrently adding the same segment may lead to duplicate device_register()
calls, which will trigger an error in kobject code:
"... don't try to register things with the same name in the same directory".
This patch adds a check to avoid this.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
drivers/s390/block/dcssblk.c diff | blob | history
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