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Message-Id: <20070928013550M.tomof@acm.org> Date: Fri, 28 Sep 2007 01:38:27 +0900 From: FUJITA Tomonori <tomof@....org> To: jens.axboe@...cle.com Cc: fujita.tomonori@....ntt.co.jp Subject: [PATCH] x86-64: pci-gart iommu sg chaining zeroes wrong sg. This patch is for Jens' block tree (sg chaining branch). I don't have the hardware but this looks like a bug. --- From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> Subject: [PATCH] x86-64: pci-gart iommu sg chaining zeroes a wrong sg's dma_length Needs to zero the end of the list. Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> --- arch/x86_64/kernel/pci-gart.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c index 27b7db4..a4151a7 100644 --- a/arch/x86_64/kernel/pci-gart.c +++ b/arch/x86_64/kernel/pci-gart.c @@ -425,9 +425,10 @@ int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, int dir) if (dma_map_cont(start_sg, i - start, sgmap, pages, need) < 0) goto error; out++; + sgmap = sg_next(sgmap); flush_gart(); if (out < nents) - ps->dma_length = 0; + sgmap->dma_length = 0; return out; error: -- 1.5.2.4 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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