[PATCH] s390: introduce struct subchannel_id

This patch introduces a struct subchannel_id containing the subchannel number
(formerly referred to as "irq") and switches code formerly relying on the
subchannel number over to it.

While we're touching inline assemblies anyway, make sure they have correct
memory constraints.

Signed-off-by: Cornelia Huck <cohuck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 0590cffe62aa..9ac07aeffbe6 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -622,7 +622,7 @@ ccw_device_do_unreg_rereg(void *data)
 
                         other_sch = to_subchannel(other_cdev->dev.parent);
                         if (get_device(&other_sch->dev)) {
-                                stsch(other_sch->irq, &other_sch->schib);
+                                stsch(other_sch->schid, &other_sch->schib);
                                 if (other_sch->schib.pmcw.dnv) {
                                         other_sch->schib.pmcw.intparm = 0;
                                         cio_modify(other_sch);
@@ -772,7 +772,7 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch)
         /* Init private data. */
         priv = cdev->private;
         priv->devno = sch->schib.pmcw.dev;
-        priv->irq = sch->irq;
+        priv->sch_no = sch->schid.sch_no;
         priv->state = DEV_STATE_NOT_OPER;
         INIT_LIST_HEAD(&priv->cmb_list);
         init_waitqueue_head(&priv->wait_q);
@@ -951,7 +951,7 @@ io_subchannel_shutdown(struct device *dev)
         sch = to_subchannel(dev);
         cdev = dev->driver_data;
 
-        if (cio_is_console(sch->irq))
+        if (cio_is_console(sch->schid))
                 return;
         if (!sch->schib.pmcw.ena)
                 /* Nothing to do. */
@@ -1146,6 +1146,16 @@ ccw_driver_unregister (struct ccw_driver *cdriver)
         driver_unregister(&cdriver->driver);
 }
 
+/* Helper func for qdio. */
+struct subchannel_id
+ccw_device_get_subchannel_id(struct ccw_device *cdev)
+{
+        struct subchannel *sch;
+
+        sch = to_subchannel(cdev->dev.parent);
+        return sch->schid;
+}
+
 MODULE_LICENSE("GPL");
 EXPORT_SYMBOL(ccw_device_set_online);
 EXPORT_SYMBOL(ccw_device_set_offline);
@@ -1155,3 +1165,4 @@ EXPORT_SYMBOL(get_ccwdev_by_busid);
 EXPORT_SYMBOL(ccw_bus_type);
 EXPORT_SYMBOL(ccw_device_work);
 EXPORT_SYMBOL(ccw_device_notify_work);
+EXPORT_SYMBOL_GPL(ccw_device_get_subchannel_id);