[S390] cio: Introduce subchannel->private.

Introduce a private pointer in struct subchannel to store
per-subchannel type data (cannot use dev->priv since this
is already used for something else).

Create a new header io_sch.h for I/O subchannel specific structures
and instructions.

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/css.c b/drivers/s390/cio/css.c
index 7d887f88bb73..2520a44fb93d 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -77,7 +77,7 @@ css_alloc_subchannel(struct subchannel_id schid)
          * This is fine even on 64bit since the subchannel is always located
          * under 2G.
          */
-        sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
+        sch->schib.pmcw.intparm = (u32)(addr_t)sch;
         ret = cio_modify(sch);
         if (ret) {
                 kfree(sch->lock);