Commit d36f0c66 authored Dec 25, 2008 by Sebastian Ott Committed by Martin Schwidefsky Dec 25, 2008

[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: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent f444cc0e

drivers/s390/cio/device.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1174,7 +1174,8 @@ void io_subchannel_init_config(struct subchannel *sch)
		{
		memset(&sch->config, 0, sizeof(sch->config));
		sch->config.csense = 1;
		if ((sch->lpm & (sch->lpm - 1)) != 0)
		/* Use subchannel mp mode when there is more than 1 installed CHPID. */
		if ((sch->schib.pmcw.pim & (sch->schib.pmcw.pim - 1)) != 0)
		sch->config.mp = 1;
		}