linux-kernel - [PATCH] drm/cirrus: Delete an unnecessary check before drm_gem_object_unreference

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Message-ID: <bebf88d8-cc28-657a-e96c-58447d8cf376@users.sourceforge.net>
Date:	Sat, 16 Jul 2016 08:40:29 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] drm/cirrus: Delete an unnecessary check before
 drm_gem_object_unreference_unlocked()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 16 Jul 2016 08:28:13 +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/cirrus/cirrus_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/cirrus/cirrus_main.c b/drivers/gpu/drm/cirrus/cirrus_main.c
index 32d32c5..80446e2 100644
--- a/drivers/gpu/drm/cirrus/cirrus_main.c
+++ b/drivers/gpu/drm/cirrus/cirrus_main.c
@@ -17,8 +17,8 @@
 static void cirrus_user_framebuffer_destroy(struct drm_framebuffer *fb)
 {
 	struct cirrus_framebuffer *cirrus_fb = to_cirrus_framebuffer(fb);
-	if (cirrus_fb->obj)
-		drm_gem_object_unreference_unlocked(cirrus_fb->obj);
+
+	drm_gem_object_unreference_unlocked(cirrus_fb->obj);
 	drm_framebuffer_cleanup(fb);
 	kfree(fb);
 }
-- 
2.9.1