File linux-2.6.40-arm-plat-omap-iommu-fix-request_mem_region-error-pat.patch of Package kernel-adaptation-n900

From 6f806c783b9f2db0d03595d1cef83393889c3d4d Mon Sep 17 00:00:00 2001
From: Aaro Koskinen <Aaro.Koskinen@nokia.com>
Date: Mon, 14 Mar 2011 12:28:32 +0000
Subject: [PATCH] arm: plat-omap: iommu: fix request_mem_region() error path

arm: plat-omap: iommu: fix request_mem_region() error path

request_mem_region() error exit will leak ioremapped memory. Fix this
by moving the ioremap() after request_mem_region(), which is the proper
order to do this anyway.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 arch/arm/plat-omap/iommu.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index e3eb038..8a51fd5 100644
--- a/arch/arm/plat-omap/iommu.c
+++ b/arch/arm/plat-omap/iommu.c
@@ -982,11 +982,6 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev)
 		err = -ENODEV;
 		goto err_mem;
 	}
-	obj->regbase = ioremap(res->start, resource_size(res));
-	if (!obj->regbase) {
-		err = -ENOMEM;
-		goto err_mem;
-	}
 
 	res = request_mem_region(res->start, resource_size(res),
 				 dev_name(&pdev->dev));
@@ -995,6 +990,12 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev)
 		goto err_mem;
 	}
 
+	obj->regbase = ioremap(res->start, resource_size(res));
+	if (!obj->regbase) {
+		err = -ENOMEM;
+		goto err_ioremap;
+	}
+
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		err = -ENODEV;
@@ -1023,8 +1024,9 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev)
 err_pgd:
 	free_irq(irq, obj);
 err_irq:
-	release_mem_region(res->start, resource_size(res));
 	iounmap(obj->regbase);
+err_ioremap:
+	release_mem_region(res->start, resource_size(res));
 err_mem:
 	clk_put(obj->clk);
 err_clk:
-- 
1.7.0.4