From f3450c7b917201bb49d67032e9f60d5125675d6a Mon Sep 17 00:00:00 2001
From: Swen Schillig <swen@vnet.ibm.com>
Date: Tue, 24 Nov 2009 16:53:59 +0100
Subject: [SCSI] zfcp: Replace local reference counting with common kref

Replace the local reference counting by already available mechanisms
offered by kref. Where possible existing device structures were used,
including the same functionality.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---
 drivers/s390/scsi/zfcp_dbf.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'drivers/s390/scsi/zfcp_dbf.c')

diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 215b70749e95..fe818cd29dc1 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -1067,6 +1067,8 @@ err_out:
  */
 void zfcp_dbf_adapter_unregister(struct zfcp_dbf *dbf)
 {
+	if (!dbf)
+		return;
 	debug_unregister(dbf->scsi);
 	debug_unregister(dbf->san);
 	debug_unregister(dbf->hba);
-- 
cgit