1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 6d714cf55064..23d5752349b5 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -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;
 }