[S390] dasd: prevent path verification before resume

Mark the device as suspended and delay execution of the path
verification worker to prevent mix-up.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index ce2a780a9ea8..65894f05a801 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -3289,6 +3289,9 @@ int dasd_generic_pm_freeze(struct ccw_device *cdev)
         if (IS_ERR(device))
                 return PTR_ERR(device);
 
+        /* mark device as suspended */
+        set_bit(DASD_FLAG_SUSPENDED, &device->flags);
+
         if (device->discipline->freeze)
                 rc = device->discipline->freeze(device);
 
@@ -3363,6 +3366,7 @@ int dasd_generic_restore_device(struct ccw_device *cdev)
         if (device->block)
                 dasd_schedule_block_bh(device->block);
 
+        clear_bit(DASD_FLAG_SUSPENDED, &device->flags);
         dasd_put_device(device);
         return 0;
 }