From: Aaro Koskinen <Aaro.Koskinen@nokia.com>
Date: Mon, 14 Mar 2011 12:28:32 +0000 (+0000)
Subject: arm: plat-omap: iommu: fix request_mem_region() error path
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=da4a0f764a6017659bf32505bbd773f561eaf605;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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>
---

diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index e3eb0380090a..8a51fd58f656 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: