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| author | Joerg Roedel <joro@8bytes.org> | 2013-04-09 15:04:36 +0200 |
|---|---|---|
| committer | Joerg Roedel <joro@8bytes.org> | 2013-04-18 17:19:45 +0200 |
| commit | a0e191b23d93464bf8726eba8da081d23c08e185 (patch) | |
| tree | a3c7c2aaadf888c15c0e39dc35b37ba548f6f7fa /drivers/iommu | |
| parent | 925fe08bce38d1ff052fe2209b9e2b8d5fbb7f98 (diff) | |
| download | blackbird-op-linux-a0e191b23d93464bf8726eba8da081d23c08e185.tar.gz blackbird-op-linux-a0e191b23d93464bf8726eba8da081d23c08e185.zip | |
iommu/amd: Remove map_sg_no_iommu()
This function was intended as a fall-back if the map_sg
function is called for a device not mapped by the IOMMU.
Since the AMD IOMMU driver uses per-device dma_ops this can
never happen. So this function isn't needed anymore.
Reviewed-by: Shuah Khan <shuahkhan@gmail.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 22 |
1 files changed, 1 insertions, 21 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index d6433e2a3bb4..93b18746d711 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2842,24 +2842,6 @@ static void unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size, } /* - * This is a special map_sg function which is used if we should map a - * device which is not handled by an AMD IOMMU in the system. - */ -static int map_sg_no_iommu(struct device *dev, struct scatterlist *sglist, - int nelems, int dir) -{ - struct scatterlist *s; - int i; - - for_each_sg(sglist, s, nelems, i) { - s->dma_address = (dma_addr_t)sg_phys(s); - s->dma_length = s->length; - } - - return nelems; -} - -/* * The exported map_sg function for dma_ops (handles scatter-gather * lists). */ @@ -2878,9 +2860,7 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, INC_STATS_COUNTER(cnt_map_sg); domain = get_domain(dev); - if (PTR_ERR(domain) == -EINVAL) - return map_sg_no_iommu(dev, sglist, nelems, dir); - else if (IS_ERR(domain)) + if (IS_ERR(domain)) return 0; dma_mask = *dev->dma_mask; |
