linux-kernel - [PATCH 1/8] drm/amdgpu: Delete an unnecessary check before drm_gem_object_unreference

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Message-ID: <6d43d27d-a55b-ddeb-76d6-3e2493786b12@users.sourceforge.net>
Date:	Sat, 16 Jul 2016 16:45:17 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
	Christian König <christian.koenig@....com>,
	Alex Deucher <alexander.deucher@....com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/8] drm/amdgpu: Delete an unnecessary check before
 drm_gem_object_unreference_unlocked()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 16 Jul 2016 11:28:36 +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/amd/amdgpu/amdgpu_display.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index a6eecf6..2a07b15 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -516,9 +516,7 @@ static void amdgpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
 {
 	struct amdgpu_framebuffer *amdgpu_fb = to_amdgpu_framebuffer(fb);
 
-	if (amdgpu_fb->obj) {
-		drm_gem_object_unreference_unlocked(amdgpu_fb->obj);
-	}
+	drm_gem_object_unreference_unlocked(amdgpu_fb->obj);
 	drm_framebuffer_cleanup(fb);
 	kfree(amdgpu_fb);
 }
-- 
2.9.1