From: Joerg Roedel <joerg.roedel@amd.com>
Date: Mon, 8 Dec 2008 13:37:20 +0000 (+0100)
Subject: AMD IOMMU: fix WARN_ON in dma_ops unmap path
X-Git-Tag: v2.6.28-rc8~42^2~2
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?p=linux-2.6-omap-h63xx.git;a=commitdiff_plain;h=8ad909c4c1b91bd35ba6a2af5e7ab3fc8d9fe283

AMD IOMMU: fix WARN_ON in dma_ops unmap path

Impact: minor fix

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 2fde073b6be..3133a0ea09f 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -910,7 +910,7 @@ static void dma_ops_domain_unmap(struct amd_iommu *iommu,
 	if (address >= dom->aperture_size)
 		return;
 
-	WARN_ON(address & 0xfffULL || address > dom->aperture_size);
+	WARN_ON(address & ~PAGE_MASK || address >= dom->aperture_size);
 
 	pte  = dom->pte_pages[IOMMU_PTE_L1_INDEX(address)];
 	pte += IOMMU_PTE_L0_INDEX(address);