linux-kernel - [PATCH] GPU-DRM-nouveau: Delete an unnecessary check before the function call "pci_dev

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Date:	Wed, 20 Jul 2016 19:50:45 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
	Ben Skeggs <bskeggs@...hat.com>,
	Daniel Vetter <daniel@...ll.ch>,
	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] GPU-DRM-nouveau: Delete an unnecessary check before the
 function call "pci_dev_put"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 20 Jul 2016 19:43:27 +0200

The pci_dev_put() 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/nouveau/nouveau_drm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 66c1280..7b09841 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -525,8 +525,7 @@ nouveau_drm_unload(struct drm_device *dev)
 	nouveau_vga_fini(drm);
 
 	nvif_device_fini(&drm->device);
-	if (drm->hdmi_device)
-		pci_dev_put(drm->hdmi_device);
+	pci_dev_put(drm->hdmi_device);
 	nouveau_cli_destroy(&drm->client);
 	return 0;
 }
-- 
2.9.2