linux-kernel - [PATCH 1/1] DRM-UDL: Deletion of an unnecessary check before the function call "vunmap"

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Date:	Wed, 19 Nov 2014 17:37:41 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/1] DRM-UDL: Deletion of an unnecessary check before the
 function call "vunmap"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 19 Nov 2014 17:33:32 +0100

The vunmap() function performes also input parameter validation. 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/gpu/drm/udl/udl_gem.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c
index 8044f5f..2979625 100644
--- a/drivers/gpu/drm/udl/udl_gem.c
+++ b/drivers/gpu/drm/udl/udl_gem.c
@@ -164,8 +164,7 @@ void udl_gem_vunmap(struct udl_gem_object *obj)
 		return;
 	}
 
-	if (obj->vmapping)
-		vunmap(obj->vmapping);
+	vunmap(obj->vmapping);
 
 	udl_gem_put_pages(obj);
 }
-- 
2.1.3

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