[S390] Some preparations for the dynamic subchannel mapping patch.

- Move adding subchannel attributes to css_register_subchannel().
- Don't call device_trigger_reprobe() for non-operational devices.
- Introduce io_subchannel_create_ccwdev().

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 0f0301ce37fe..a487fb0e7d3d 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -1106,7 +1106,8 @@ device_trigger_reprobe(struct subchannel *sch)
         /* Update some values. */
         if (stsch(sch->schid, &sch->schib))
                 return;
-
+        if (!sch->schib.pmcw.dnv)
+                return;
         /*
          * The pim, pam, pom values may not be accurate, but they are the best
          * we have before performing device selection :/