[S390] ccwgroup: add locking around drvdata access

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Several processes may concurrently try to create a group device
from the same ccw_device(s). Add locking arround the drvdata
access to prevent race conditions.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Sebastian Ott 2010-05-26 23:27:07 +02:00 • committed by Martin Schwidefsky

parent a65a3e82b5

commit c560d105a1

1 changed files with 7 additions and 0 deletions

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7

drivers/s390/cio/ccwgroup.c

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