[S390] cio long busy in read configuration data.

[linux-2.6] / drivers / s390 / cio / device_ops.c

diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 795abb5a65ba122620517ff44b7164deceec0a50..5c9904b418e1244c71c10d82945857859b0f46dd 100644 (file)
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -270,7 +270,8 @@ ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb)
                 * We didn't get channel end / device end. Check if path
                 * verification has been started; we can retry after it has
                 * finished. We also retry unit checks except for command reject
-                * or intervention required.
+                * or intervention required. Also check for long busy
+                * conditions.
                 */
                 if (cdev->private->flags.doverify ||
                         cdev->private->state == DEV_STATE_VERIFY)
@@ -279,6 +280,10 @@ ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb)
                     !(irb->ecw[0] &
                       (SNS0_CMD_REJECT | SNS0_INTERVENTION_REQ)))
                         cdev->private->intparm = -EAGAIN;
+               else if ((irb->scsw.dstat & DEV_STAT_ATTENTION) &&
+                        (irb->scsw.dstat & DEV_STAT_DEV_END) &&
+                        (irb->scsw.dstat & DEV_STAT_UNIT_EXCEP))
+                       cdev->private->intparm = -EAGAIN;
                 else
                         cdev->private->intparm = -EIO;