[S390] cio: I/O subchannel specific fields.

Some fields may be !0 only for I/O subchannels. Add some checks
where required. Also adapt cio_enable_subchannel() to make the
caller specify the intparm, which makes it more generic.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 44a2ea40806e..12a344c66b46 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -89,7 +89,8 @@ int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
         /* Copy data */
         ret = 0;
         memset(ssd, 0, sizeof(struct chsc_ssd_info));
-        if ((ssd_area->st != 0) && (ssd_area->st != 2))
+        if ((ssd_area->st != SUBCHANNEL_TYPE_IO) &&
+            (ssd_area->st != SUBCHANNEL_TYPE_MSG))
                 goto out_free;
         ssd->path_mask = ssd_area->path_mask;
         ssd->fla_valid_mask = ssd_area->fla_valid_mask;
@@ -158,7 +159,7 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
         spin_lock_irq(sch->lock);
 
         stsch(sch->schid, &schib);
-        if (!schib.pmcw.dnv)
+        if (!css_sch_is_valid(&schib))
                 goto out_unreg;
         memcpy(&sch->schib, &schib, sizeof(struct schib));
         /* Check for single path devices. */