linux-kernel - [PATCH 5/8] x86: add free_coherent dma

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Date:	Tue, 19 Aug 2008 16:32:43 +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,
	muli@...ibm.com, Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 5/8] x86: add free_coherent dma_ops callback to NOMMU driver

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kernel/pci-nommu.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index b8ce83c..73853d3 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -126,8 +126,15 @@ again:
 	return NULL;
 }
 
+static void nommu_free_coherent(struct device *dev, size_t size, void *vaddr,
+				dma_addr_t dma_addr)
+{
+	free_pages((unsigned long)vaddr, get_order(size));
+}
+
 struct dma_mapping_ops nommu_dma_ops = {
 	.alloc_coherent = nommu_alloc_coherent,
+	.free_coherent = nommu_free_coherent,
 	.map_single = nommu_map_single,
 	.map_sg = nommu_map_sg,
 	.is_phys = 1,
-- 
1.5.3.7


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