[S390] cio: use pim to check for multipath.
To check if multipath is available we count the bits set in lpm, which could change over time (via configure [on|off] of a path). The following patch uses the pim (which is persistent) for this decision. Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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