linux-kernel - [PATCH] nouveau: kfree() gracefully handles NULL pointers, testing is redundant

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Date:	Thu, 15 Mar 2012 00:50:49 +0100 (CET)
From:	Jesper Juhl <jj@...osbits.net>
To:	linux-kernel@...r.kernel.org
cc:	dri-devel@...ts.freedesktop.org,
	Francisco Jerez <currojerez@...eup.net>,
	Emil Velikov <emil.l.velikov@...il.com>,
	Ben Skeggs <bskeggs@...hat.com>,
	David Airlie <airlied@...ux.ie>
Subject: [PATCH] nouveau: kfree() gracefully handles NULL pointers, testing
 is redundant

Remove redundant NULL checks before kfree() in
drivers/gpu/drm/nouveau/nvc0_graph.c

Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 drivers/gpu/drm/nouveau/nvc0_graph.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nvc0_graph.c b/drivers/gpu/drm/nouveau/nvc0_graph.c
index 8ee3963..e9eca29 100644
--- a/drivers/gpu/drm/nouveau/nvc0_graph.c
+++ b/drivers/gpu/drm/nouveau/nvc0_graph.c
@@ -755,10 +755,8 @@ nvc0_graph_create_fw(struct drm_device *dev, const char *fwname,
 static void
 nvc0_graph_destroy_fw(struct nvc0_graph_fuc *fuc)
 {
-	if (fuc->data) {
-		kfree(fuc->data);
-		fuc->data = NULL;
-	}
+	kfree(fuc->data);
+	fuc->data = NULL;
 }
 
 static void
@@ -778,8 +776,7 @@ nvc0_graph_destroy(struct drm_device *dev, int engine)
 	nouveau_gpuobj_ref(NULL, &priv->unk4188b8);
 	nouveau_gpuobj_ref(NULL, &priv->unk4188b4);
 
-	if (priv->grctx_vals)
-		kfree(priv->grctx_vals);
+	kfree(priv->grctx_vals);
 
 	NVOBJ_ENGINE_DEL(dev, GR);
 	kfree(priv);
-- 
1.7.9.4


-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
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