[S390] cio: make steal lock procedure more robust

An Unconditional Reserve + Release operation (steal lock) for a
boxed device may fail when encountering special error cases
(e.g. unit checks or path errors). Fix this by using the more
robust ccw_request infrastructure for performing the steal lock
CCW program.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 2df519bb877e..bcfe13e42638 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -28,6 +28,7 @@ enum dev_state {
         DEV_STATE_DISCONNECTED_SENSE_ID,
         DEV_STATE_CMFCHANGE,
         DEV_STATE_CMFUPDATE,
+        DEV_STATE_STEAL_LOCK,
         /* last element! */
         NR_DEV_STATES
 };
@@ -116,6 +117,9 @@ void ccw_device_verify_done(struct ccw_device *, int);
 void ccw_device_disband_start(struct ccw_device *);
 void ccw_device_disband_done(struct ccw_device *, int);
 
+void ccw_device_stlck_start(struct ccw_device *, void *, void *, void *);
+void ccw_device_stlck_done(struct ccw_device *, void *, int);
+
 int ccw_device_call_handler(struct ccw_device *);
 
 int ccw_device_stlck(struct ccw_device *);