Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (22 commits)
  [S390] Update default configuration.
  [S390] kprobes: defer setting of ctlblk state
  [S390] Enable tick based perf_counter on s390.
  [S390] dasd: fix refcounting in dasd_change_state
  [S390] lockless idle time accounting
  [S390] driver_data access
  [S390] pm: fix build error for !SMP
  [S390] dasd_pm: fix stop flag handling
  [S390] ap/zcrypt: Suspend/Resume ap bus and zcrypt
  [S390] qdio: Sanitize do_QDIO sanity checks
  [S390] qdio: leave inbound SBALs primed
  [S390] qdio: merge AI tasklet into interrupt handler
  [S390] qdio: extract all primed SBALs at once
  [S390] qdio: fix check for running under z/VM
  [S390] qdio: move adapter interrupt tasklet code
  [S390] Use del_timer instead of del_timer_sync
  [S390] s390: remove DEBUG_MALLOC
  [S390] vt220 console: convert from bootmem to slab
  [S390] sclp console: convert from bootmem to slab
  [S390] 3270 console: convert from bootmem to slab
  ...

1 files changed, 16 insertions, 4 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index e5b84db0aa0..74983666865 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -470,7 +470,7 @@ static int dasd_decrease_state(struct dasd_device *device)
  */
 static void dasd_change_state(struct dasd_device *device)
 {
-        int rc;
+	int rc;
 
 	if (device->state == device->target)
 		/* Already where we want to go today... */
@@ -479,8 +479,10 @@ static void dasd_change_state(struct dasd_device *device)
 		rc = dasd_increase_state(device);
 	else
 		rc = dasd_decrease_state(device);
-        if (rc && rc != -EAGAIN)
-                device->target = device->state;
+	if (rc == -EAGAIN)
+		return;
+	if (rc)
+		device->target = device->state;
 
 	if (device->state == device->target) {
 		wake_up(&dasd_init_waitq);
@@ -2503,15 +2505,25 @@ int dasd_generic_restore_device(struct ccw_device *cdev)
 	if (IS_ERR(device))
 		return PTR_ERR(device);
 
+	/* allow new IO again */
+	device->stopped &= ~DASD_STOPPED_PM;
+	device->stopped &= ~DASD_UNRESUMED_PM;
+
 	dasd_schedule_device_bh(device);
 	if (device->block)
 		dasd_schedule_block_bh(device->block);
 
 	if (device->discipline->restore)
 		rc = device->discipline->restore(device);
+	if (rc)
+		/*
+		 * if the resume failed for the DASD we put it in
+		 * an UNRESUMED stop state
+		 */
+		device->stopped |= DASD_UNRESUMED_PM;
 
 	dasd_put_device(device);
-	return rc;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(dasd_generic_restore_device);