linux-kernel - Re: [PATCH] intel-iommu: fix sg

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Message-ID: <20071023045841.GB18751@askeshav-devel.jf.intel.com>
Date:	Mon, 22 Oct 2007 21:58:41 -0700
From:	"Keshavamurthy, Anil S" <anil.s.keshavamurthy@...el.com>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	jens.axboe@...cle.com, torvalds@...ux-foundation.org,
	anil.s.keshavamurthy@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] intel-iommu: fix sg_page()

On Tue, Oct 23, 2007 at 01:59:26PM +0900, FUJITA Tomonori wrote:
> drivers/pci/intel-iommu.c: In function 'intel_unmap_sg':
> drivers/pci/intel-iommu.c:1987: error: 'struct scatterlist' has no member named 'page'
> drivers/pci/intel-iommu.c: In function 'intel_nontranslate_map_sg':
> drivers/pci/intel-iommu.c:2013: error: 'struct scatterlist' has no member named 'page'
> drivers/pci/intel-iommu.c:2014: error: 'struct scatterlist' has no member named 'page'
> drivers/pci/intel-iommu.c: In function 'intel_map_sg':
> drivers/pci/intel-iommu.c:2044: error: 'struct scatterlist' has no member named 'page'
> drivers/pci/intel-iommu.c:2068: error: 'struct scatterlist' has no member named 'page'
> 
> Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Acked by: Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>

> ---
>  drivers/pci/intel-iommu.c |   11 +++++------
>  1 files changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
> index b3d7031..0f6e528 100644
> --- a/drivers/pci/intel-iommu.c
> +++ b/drivers/pci/intel-iommu.c
> @@ -1962,7 +1962,6 @@ static void intel_free_coherent(struct device *hwdev, size_t size,
>  	free_pages((unsigned long)vaddr, order);
>  }
>  
> -#define SG_ENT_VIRT_ADDRESS(sg)	(page_address((sg)->page) + (sg)->offset)
>  static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
>  	int nelems, int dir)
>  {
> @@ -1984,7 +1983,7 @@ static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
>  	if (!iova)
>  		return;
>  	for_each_sg(sglist, sg, nelems, i) {
> -		addr = SG_ENT_VIRT_ADDRESS(sg);
> +		addr = sg_virt(sg);
>  		size += aligned_size((u64)addr, sg->length);
>  	}
>  
> @@ -2010,8 +2009,8 @@ static int intel_nontranslate_map_sg(struct device *hddev,
>  	struct scatterlist *sg;
>  
>  	for_each_sg(sglist, sg, nelems, i) {
> -		BUG_ON(!sg->page);
> -		sg->dma_address = virt_to_bus(SG_ENT_VIRT_ADDRESS(sg));
> +		BUG_ON(!sg_page(sg));
> +		sg->dma_address = virt_to_bus(sg_virt(sg));
>  		sg->dma_length = sg->length;
>  	}
>  	return nelems;
> @@ -2041,7 +2040,7 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist,
>  		return 0;
>  
>  	for_each_sg(sglist, sg, nelems, i) {
> -		addr = SG_ENT_VIRT_ADDRESS(sg);
> +		addr = sg_virt(sg);
>  		addr = (void *)virt_to_phys(addr);
>  		size += aligned_size((u64)addr, sg->length);
>  	}
> @@ -2065,7 +2064,7 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist,
>  	start_addr = iova->pfn_lo << PAGE_SHIFT_4K;
>  	offset = 0;
>  	for_each_sg(sglist, sg, nelems, i) {
> -		addr = SG_ENT_VIRT_ADDRESS(sg);
> +		addr = sg_virt(sg);
>  		addr = (void *)virt_to_phys(addr);
>  		size = aligned_size((u64)addr, sg->length);
>  		ret = domain_page_mapping(domain, start_addr + offset,
> -- 
> 1.5.2.4
-
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