linux-kernel - [PATCH] IOMMU-Tegra: gart: Delete an unnecessary check before the function call "vfree"

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Date:	Thu, 05 Feb 2015 18:00:25 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Alexandre Courbot <gnurou@...il.com>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	Jörg Rödel <joro@...tes.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>,
	iommu@...ts.linux-foundation.org, linux-tegra@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] IOMMU-Tegra: gart: Delete an unnecessary check before the
 function call "vfree"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 5 Feb 2015 17:54:16 +0100

The vfree() function performs also input parameter validation.
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/iommu/tegra-gart.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index f722a0c..07a795a 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -404,8 +404,7 @@ static int tegra_gart_remove(struct platform_device *pdev)
 	struct gart_device *gart = platform_get_drvdata(pdev);
 
 	writel(0, gart->regs + GART_CONFIG);
-	if (gart->savedata)
-		vfree(gart->savedata);
+	vfree(gart->savedata);
 	gart_handle = NULL;
 	return 0;
 }
-- 
2.2.2

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