linux-kernel - [PATCH] iommu: fsl_pamu.c: Fix for possible null pointer dereference

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Message-Id: <1400347004-25368-1-git-send-email-rickard_strandqvist@spectrumdigital.se>
Date:	Sat, 17 May 2014 19:16:44 +0200
From:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To:	Joerg Roedel <joro@...tes.org>,
	Grant Likely <grant.likely@...aro.org>
Cc:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
	Rob Herring <robh+dt@...nel.org>,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH] iommu: fsl_pamu.c:  Fix for possible null pointer dereference

There is otherwise a risk of a possible null pointer dereference.

Was largely found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
---
 drivers/iommu/fsl_pamu.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c
index cba0498..b99dd88 100644
--- a/drivers/iommu/fsl_pamu.c
+++ b/drivers/iommu/fsl_pamu.c
@@ -592,8 +592,7 @@ found_cpu_node:
 		/* advance to next node in cache hierarchy */
 		node = of_find_node_by_phandle(*prop);
 		if (!node) {
-			pr_debug("Invalid node for cache hierarchy %s\n",
-				node->full_name);
+			pr_debug("Invalid node for cache hierarchy\n");
 			return ~(u32)0;
 		}
 	}
-- 
1.7.10.4

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