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Diffstat (limited to 'drivers/s390/block/dasd.c')
-rw-r--r--drivers/s390/block/dasd.c20
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);