linux-kernel - [PATCH 17/23] AMD IOMMU: replace memset with __GFP_ZERO in alloc

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Date:	Wed, 17 Sep 2008 18:52:51 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	linux-kernel@...r.kernel.org
CC:	iommu@...ts.linux-foundation.org,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 17/23] AMD IOMMU: replace memset with __GFP_ZERO in alloc_coherent

Remove the memset to 0 and use __GFP_ZERO at allocation time instead.

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kernel/amd_iommu.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 963b8bb..65aed6e 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1176,11 +1176,11 @@ static void *alloc_coherent(struct device *dev, size_t size,
 	if (!get_device_resources(dev, &iommu, &domain, &devid))
 		flag &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
 
+	flag |= __GFP_ZERO;
 	virt_addr = (void *)__get_free_pages(flag, get_order(size));
 	if (!virt_addr)
 		return 0;
 
-	memset(virt_addr, 0, size);
 	paddr = virt_to_phys(virt_addr);
 
 	if (!iommu || !domain) {
-- 
1.5.6.4


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