tree b7244cc14038bc337d89d7a00acd847626438ffe
parent 82b7ac058f60e0c92f9237fbaf440671f437ecdf
author Cornelia Huck <cornelia.huck@de.ibm.com> 1177682497 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1177682501 +0200

[S390] cio: ccwgroup register vs. unregister.

Introduce a mutex for struct ccwgroup to prevent simuntaneous
register/unregister on the same ccwgroup device.

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