linux-kernel - [PATCH 2/2] iommu/tegra: smmu: Remove unnecessary cleanups with devm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 14 May 2012 22:16:11 +0300
From:	Hiroshi DOYU <hdoyu@...dia.com>
To:	<hdoyu@...dia.com>
CC:	<linux-tegra@...r.kernel.org>, <iommu@...ts.linux-foundation.org>,
	Joerg Roedel <joerg.roedel@....com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Thierry Reding <thierry.reding@...onic-design.de>,
	Stephen Warren <swarren@...dotorg.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] iommu/tegra: smmu: Remove unnecessary cleanups with devm_*()

Remove unnecessary cleanup procedures with devm_*() functions.

Signed-off-by: Hiroshi DOYU <hdoyu@...dia.com>
---
 drivers/iommu/tegra-smmu.c |   37 ++++++-------------------------------
 1 files changed, 6 insertions(+), 31 deletions(-)

diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index e4acd44..9d0cc33 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -972,51 +972,26 @@ static int tegra_smmu_probe(struct platform_device *pdev)
 	spin_lock_init(&smmu->lock);
 	err = smmu_setup_regs(smmu);
 	if (err)
-		goto fail;
+		return err;
 	platform_set_drvdata(pdev, smmu);
 
 	smmu->avp_vector_page = alloc_page(GFP_KERNEL);
 	if (!smmu->avp_vector_page)
-		goto fail;
+		return -ENOMEM;
 
 	smmu_handle = smmu;
 	return 0;
-
-fail:
-	if (smmu->avp_vector_page)
-		__free_page(smmu->avp_vector_page);
-	if (smmu && smmu->as) {
-		for (i = 0; i < smmu->num_as; i++) {
-			if (smmu->as[i].pdir_page) {
-				ClearPageReserved(smmu->as[i].pdir_page);
-				__free_page(smmu->as[i].pdir_page);
-			}
-		}
-		devm_kfree(dev, smmu->as);
-	}
-	devm_kfree(dev, smmu);
-	return err;
 }
 
 static int tegra_smmu_remove(struct platform_device *pdev)
 {
 	struct smmu_device *smmu = platform_get_drvdata(pdev);
-	struct device *dev = smmu->dev;
+	int i;
 
 	smmu_write(smmu, SMMU_CONFIG_DISABLE, SMMU_CONFIG);
-	platform_set_drvdata(pdev, NULL);
-	if (smmu->as) {
-		int i;
-
-		for (i = 0; i < smmu->num_as; i++)
-			free_pdir(&smmu->as[i]);
-		devm_kfree(dev, smmu->as);
-	}
-	if (smmu->avp_vector_page)
-		__free_page(smmu->avp_vector_page);
-	if (smmu->regs)
-		devm_iounmap(dev, smmu->regs);
-	devm_kfree(dev, smmu);
+	for (i = 0; i < smmu->num_as; i++)
+		free_pdir(&smmu->as[i]);
+	__free_page(smmu->avp_vector_page);
 	smmu_handle = NULL;
 	return 0;
 }
-- 
1.7.5.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/