linux-kernel - [PATCH 1/3] drm/msm/hdmi: Delete an unnecessary check before the function call "kfree"

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Date:	Wed, 13 Jul 2016 20:00:11 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	David Airlie <airlied@...ux.ie>, Rob Clark <robdclark@...il.com>,
	dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
	linux-arm-msm@...r.kernel.org
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/3] drm/msm/hdmi: Delete an unnecessary check before the
 function call "kfree"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 13 Jul 2016 18:54:11 +0200

The kfree() 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/msm/hdmi/hdmi_hdcp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hdcp.c b/drivers/gpu/drm/msm/hdmi/hdmi_hdcp.c
index 0baaaaa..6e76797 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_hdcp.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_hdcp.c
@@ -1430,7 +1430,7 @@ struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi)
 
 void msm_hdmi_hdcp_destroy(struct hdmi *hdmi)
 {
-	if (hdmi && hdmi->hdcp_ctrl) {
+	if (hdmi) {
 		kfree(hdmi->hdcp_ctrl);
 		hdmi->hdcp_ctrl = NULL;
 	}
-- 
2.9.0