s390/cio: handle unknown pgroup state
When an attempt to query or modify the grouping state of a channel path fails due to a timeout, we cannot be sure about its state. To get back to a defined state, disband the whole path group and try again while excluding the offending path. Reviewed-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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