[S390] dasd: fix device shutdown process.
Fix clear_IO handling (need to wait for interrupt) and
introduced error-handling in shutdown processing.
Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 4c272b7..d163632 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -83,10 +83,12 @@
void
dasd_gendisk_free(struct dasd_device *device)
{
- del_gendisk(device->gdp);
- device->gdp->queue = NULL;
- put_disk(device->gdp);
- device->gdp = NULL;
+ if (device->gdp) {
+ del_gendisk(device->gdp);
+ device->gdp->queue = NULL;
+ put_disk(device->gdp);
+ device->gdp = NULL;
+ }
}
/*