[S390] css: update subchannel descriptor

Update the subchannel descriptor if we receive a
"Installed parameters modified" crw.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 825951b6b83..24d8e97355b 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -618,6 +618,7 @@ EXPORT_SYMBOL_GPL(css_schedule_reprobe);
 static void css_process_crw(struct crw *crw0, struct crw *crw1, int overflow)
 {
         struct subchannel_id mchk_schid;
+        struct subchannel *sch;
 
         if (overflow) {
                 css_schedule_eval_all();
@@ -637,6 +638,13 @@ static void css_process_crw(struct crw *crw0, struct crw *crw1, int overflow)
         if (crw1)
                 mchk_schid.ssid = (crw1->rsid >> 4) & 3;
 
+        if (crw0->erc == CRW_ERC_PMOD) {
+                sch = get_subchannel_by_schid(mchk_schid);
+                if (sch) {
+                        css_update_ssd_info(sch);
+                        put_device(&sch->dev);
+                }
+        }
         /*
          * Since we are always presented with IPI in the CRW, we have to
          * use stsch() to find out if the subchannel in question has come