linux-kernel - [PATCH] SCSI-OSD: Delete an unnecessary check before the function call "put

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Message-ID: <558ABBC2.8080304@users.sourceforge.net>
Date:	Wed, 24 Jun 2015 16:16:34 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Benny Halevy <bhalevy@...marydata.com>,
	Boaz Harrosh <openosd@...il.com>,
	"James E. J. Bottomley" <JBottomley@...allels.com>,
	linux-scsi@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] SCSI-OSD: Delete an unnecessary check before the function
 call "put_disk"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 24 Jun 2015 16:06:21 +0200

The put_disk() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/scsi/osd/osd_uld.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/scsi/osd/osd_uld.c b/drivers/scsi/osd/osd_uld.c
index 243eab3..e2075522 100644
--- a/drivers/scsi/osd/osd_uld.c
+++ b/drivers/scsi/osd/osd_uld.c
@@ -407,9 +407,7 @@ static void __remove(struct device *dev)
 
 	OSD_INFO("osd_remove %s\n",
 		 oud->disk ? oud->disk->disk_name : NULL);
-
-	if (oud->disk)
-		put_disk(oud->disk);
+	put_disk(oud->disk);
 	ida_remove(&osd_minor_ida, oud->minor);
 
 	kfree(oud);
-- 
2.4.4

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