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alpha: fix sg_page breakage

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Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
FUJITA Tomonori 2007-11-21 12:26:31 +01:00 committed by Jens Axboe
parent 35fc51e7a5
commit 8c8d7214d1
1 changed files with 8 additions and 6 deletions
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14
arch/alpha/kernel/pci-noop.c
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@ -12,6 +12,7 @@
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
#include "proto.h"
@ -172,18 +173,19 @@ dma_alloc_coherent(struct device *dev, size_t size,
EXPORT_SYMBOL(dma_alloc_coherent);
int
dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
dma_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
enum dma_data_direction direction)
{
int i;
struct scatterlist *sg;
for (i = 0; i < nents; i++ ) {
for_each_sg(sgl, sg, nents, i) {
void *va;
BUG_ON(!sg[i].page);
va = page_address(sg[i].page) + sg[i].offset;
sg_dma_address(sg + i) = (dma_addr_t)virt_to_bus(va);
sg_dma_len(sg + i) = sg[i].length;
BUG_ON(!sg_page(sg));
va = sg_virt(sg);
sg_dma_address(sg) = (dma_addr_t)virt_to_bus(va);
sg_dma_len(sg) = sg->length;
}
return nents;