[PATCH 01/16] zfcp: do not wait for rports to become unblocked after host reset

[Hannes Reinecke <hare@suse.de>]

zfcp_scsi_eh_host_reset_handler() would call fc_block_rport() to
wait for all rports to become unblocked after host reset.
But after host reset it might happen that the port is gone, hence
fc_block_rport() might fail due to a missing port.
But that's a perfectly legal operation; on FC remote ports might
come and go.
So this patch removes the call to fc_block_rport() after host
reset. But with that rports may still be in blocked state after
host reset, so we need to return FAST_IO_FAIL from host reset
to avoid SCSI EH to fail commands prematurely if the rports
are still blocked.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: Steffen Maier <maier@linux.ibm.com
Cc: Benjamin Block <bblock@linux.ibm.com>
---
 drivers/s390/scsi/zfcp_scsi.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index b2a8cd792266..b1df853e6f66 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -375,7 +375,7 @@ static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
 {
 	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
 	struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
-	int ret = SUCCESS, fc_ret;
+	int ret = FAST_IO_FAIL;
 
 	if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) {
 		zfcp_erp_port_forced_reopen_all(adapter, 0, "schrh_p");
@@ -383,10 +383,6 @@ static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
 	}
 	zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
 	zfcp_erp_wait(adapter);
-	fc_ret = fc_block_scsi_eh(scpnt);
-	if (fc_ret)
-		ret = fc_ret;
-
 	zfcp_dbf_scsi_eh("schrh_r", adapter, ~0, ret);
 	return ret;
 }
-- 
2.35.3