[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, 8 insertions, 5 deletions

diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 8b6be2142c81..44ce7a3d3857 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -96,29 +96,32 @@ static void ccw_timeout_log(struct ccw_device *cdev)
 {
         struct schib schib;
         struct subchannel *sch;
+        struct io_subchannel_private *private;
         int cc;
 
         sch = to_subchannel(cdev->dev.parent);
+        private = to_io_private(sch);
         cc = stsch(sch->schid, &schib);
 
         printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, "
                "device information:\n", get_clock());
         printk(KERN_WARNING "cio: orb:\n");
         print_hex_dump(KERN_WARNING, "cio:  ", DUMP_PREFIX_NONE, 16, 1,
-                       &sch->orb, sizeof(sch->orb), 0);
+                       &private->orb, sizeof(private->orb), 0);
         printk(KERN_WARNING "cio: ccw device bus id: %s\n", cdev->dev.bus_id);
         printk(KERN_WARNING "cio: subchannel bus id: %s\n", sch->dev.bus_id);
         printk(KERN_WARNING "cio: subchannel lpm: %02x, opm: %02x, "
                "vpm: %02x\n", sch->lpm, sch->opm, sch->vpm);
 
-        if ((void *)(addr_t)sch->orb.cpa == &sch->sense_ccw ||
-            (void *)(addr_t)sch->orb.cpa == cdev->private->iccws)
+        if ((void *)(addr_t)private->orb.cpa == &private->sense_ccw ||
+            (void *)(addr_t)private->orb.cpa == cdev->private->iccws)
                 printk(KERN_WARNING "cio: last channel program (intern):\n");
         else
                 printk(KERN_WARNING "cio: last channel program:\n");
 
         print_hex_dump(KERN_WARNING, "cio:  ", DUMP_PREFIX_NONE, 16, 1,
-                       (void *)(addr_t)sch->orb.cpa, sizeof(struct ccw1), 0);
+                       (void *)(addr_t)private->orb.cpa,
+                       sizeof(struct ccw1), 0);
         printk(KERN_WARNING "cio: ccw device state: %d\n",
                cdev->private->state);
         printk(KERN_WARNING "cio: store subchannel returned: cc=%d\n", cc);
@@ -1078,7 +1081,7 @@ device_trigger_reprobe(struct subchannel *sch)
         sch->schib.pmcw.ena = 0;
         if ((sch->lpm & (sch->lpm - 1)) != 0)
                 sch->schib.pmcw.mp = 1;
-        sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
+        sch->schib.pmcw.intparm = (u32)(addr_t)sch;
         /* We should also udate ssd info, but this has to wait. */
         /* Check if this is another device which appeared on the same sch. */
         if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) {