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author | Thiemo Seufer <ths@networkno.de> | 2005-09-09 17:09:18 +0000 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2005-10-29 19:32:17 +0100 |
commit | 424cadae94a683afe2164f726269d2b479d99732 (patch) | |
tree | c75849ee46e6b6f7ab209c1fdae8d89fb4dd4d68 | |
parent | 98e316d4b151111d5a8ff2b3a684a9300634d83f (diff) | |
download | op-kernel-dev-424cadae94a683afe2164f726269d2b479d99732.zip op-kernel-dev-424cadae94a683afe2164f726269d2b479d99732.tar.gz |
Don't set up a sg dma address if we have no page address for some reason.
Code cleanup.
Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r-- | arch/mips/mm/dma-noncoherent.c | 46 |
1 files changed, 8 insertions, 38 deletions
diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-noncoherent.c index 4ce0202..cd4ea84 100644 --- a/arch/mips/mm/dma-noncoherent.c +++ b/arch/mips/mm/dma-noncoherent.c @@ -105,22 +105,7 @@ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, { unsigned long addr = (unsigned long) ptr; - switch (direction) { - case DMA_TO_DEVICE: - dma_cache_wback(addr, size); - break; - - case DMA_FROM_DEVICE: - dma_cache_inv(addr, size); - break; - - case DMA_BIDIRECTIONAL: - dma_cache_wback_inv(addr, size); - break; - - default: - BUG(); - } + __dma_sync(addr, size, direction); return virt_to_phys(ptr); } @@ -133,22 +118,7 @@ void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, unsigned long addr; addr = dma_addr + PAGE_OFFSET; - switch (direction) { - case DMA_TO_DEVICE: - //dma_cache_wback(addr, size); - break; - - case DMA_FROM_DEVICE: - //dma_cache_inv(addr, size); - break; - - case DMA_BIDIRECTIONAL: - //dma_cache_wback_inv(addr, size); - break; - - default: - BUG(); - } + //__dma_sync(addr, size, direction); } EXPORT_SYMBOL(dma_unmap_single); @@ -164,10 +134,11 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, unsigned long addr; addr = (unsigned long) page_address(sg->page); - if (addr) + if (addr) { __dma_sync(addr + sg->offset, sg->length, direction); - sg->dma_address = (dma_addr_t) - (page_to_phys(sg->page) + sg->offset); + sg->dma_address = (dma_addr_t)page_to_phys(sg->page) + + sg->offset; + } } return nents; @@ -218,9 +189,8 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, for (i = 0; i < nhwentries; i++, sg++) { addr = (unsigned long) page_address(sg->page); - if (!addr) - continue; - dma_cache_wback_inv(addr + sg->offset, sg->length); + if (addr) + __dma_sync(addr + sg->offset, sg->length, direction); } } |