[S390] cio: Make isc handling more robust.

Introduce an ->isc field in the subchannel to store the desired
interruption subclass, since sch->schib.pmcw.isc may be overwritten
by the hardware on stsch() after machine checks.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index a1718a0aa539..f308ad55a6d5 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -508,7 +508,7 @@ ccw_device_stlck(struct ccw_device *cdev)
                 return -ENOMEM;
         }
         spin_lock_irqsave(sch->lock, flags);
-        ret = cio_enable_subchannel(sch, 3, (u32)(addr_t)sch);
+        ret = cio_enable_subchannel(sch, (u32)(addr_t)sch);
         if (ret)
                 goto out_unlock;
         /*