linux-kernel - [PATCH] GPU-DRM-Radeon: Delete an unnecessary check before drm_gem_object_unreference

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Date:	Tue, 12 Jul 2016 22:22:13 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	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] GPU-DRM-Radeon: Delete an unnecessary check before
 drm_gem_object_unreference_unlocked()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 12 Jul 2016 22:00:55 +0200

The drm_gem_object_unreference_unlocked() 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/gpu/drm/radeon/radeon_display.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 5f1cd69..1efab5f 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1324,9 +1324,7 @@ static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
 {
 	struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
 
-	if (radeon_fb->obj) {
-		drm_gem_object_unreference_unlocked(radeon_fb->obj);
-	}
+	drm_gem_object_unreference_unlocked(radeon_fb->obj);
 	drm_framebuffer_cleanup(fb);
 	kfree(radeon_fb);
 }
-- 
2.9.0