linux-kernel - [PATCH] x86: make gart_alloc_coherent return zeroed memory

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Date:	Thu, 21 Aug 2008 19:28:27 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	mingo@...hat.com, tglx@...utronix.de, hpa@...or.com
CC:	linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH] x86: make gart_alloc_coherent return zeroed memory

The dma_alloc_coherent function should return memory set to zero. This patch
adds this to the GART implementation.

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kernel/pci-gart_64.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 92f5c67..3b5e9e8 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -513,7 +513,7 @@ gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr,
 {
 	void *vaddr;
 
-	vaddr = (void *)__get_free_pages(flag, get_order(size));
+	vaddr = (void *)__get_free_pages(flag | __GFP_ZERO, get_order(size));
 	if (!vaddr)
 		return NULL;
 
-- 
1.5.3.7


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