s390/memory hotplug: initialize storage keys

Add missing storage key initialization when memory comes online.
Didn't hurt until now, since the kernel always uses access key 0.

However for debugging purposes we sometimes use a different key
and it might be good if everything is properly initialized...

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 231a1d85127b8778d8fdcac0c09662868201c739..36506366158daa719c5c66419c0000c233a09d87 100644 (file)
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -352,7 +352,17 @@ out:
 
 static int sclp_assign_storage(u16 rn)
 {
-       return do_assign_storage(0x000d0001, rn);
+       unsigned long long start, address;
+       int rc;
+
+       rc = do_assign_storage(0x000d0001, rn);
+       if (rc)
+               goto out;
+       start = address = rn2addr(rn);
+       for (; address < start + rzm; address += PAGE_SIZE)
+               page_set_storage_key(address, PAGE_DEFAULT_KEY, 0);
+out:
+       return rc;
 }
 
 static int sclp_unassign_storage(u16 rn)