[S390] cio: Fix ungroup vs. machine check race in ccwgroup.

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There are two ways for a ccwgroup device to be unregistered:
Via the ungroup attribute, or when on of the slave devices is killed
by a machine check. As we have to unregister the ccwgroup device
via a callback, we'll now have to check whether it hasn't been
already unregistered because of a machine check.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Cornelia Huck 2008-01-26 14:10:50 +01:00 • committed by Martin Schwidefsky

parent 46258ab5e4

commit 1a908c735a

1 changed files with 4 additions and 2 deletions

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drivers/s390/cio/ccwgroup.c

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