tree 764da7edd4c8237b72429575e53003f280496c3b
parent 46258ab5e42eed5cbe20a83b732d6538c49ea2fe
author Cornelia Huck <cornelia.huck@de.ibm.com> 1201353050 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1201353064 +0100

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

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>