diff options
author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-24 13:38:30 +1100 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-24 13:38:30 +1100 |
commit | 9e41d9597e7825ec20d690013d32bcec5f3fe16a (patch) | |
tree | ac6fea59e9a4a1c2183d6bbd6ffa760680673afb /arch/arm/mm/dma-mapping.c | |
parent | 77ecfe8d427f554fabbf258e9d789f1d4c3afd63 (diff) | |
parent | 8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84 (diff) |
Merge commit 'origin/master' into next
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
-rw-r--r-- | arch/arm/mm/dma-mapping.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 310e479309ef..f1ef5613ccd4 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -490,26 +490,30 @@ core_initcall(consistent_init); */ void dma_cache_maint(const void *start, size_t size, int direction) { - const void *end = start + size; + void (*inner_op)(const void *, const void *); + void (*outer_op)(unsigned long, unsigned long); - BUG_ON(!virt_addr_valid(start) || !virt_addr_valid(end - 1)); + BUG_ON(!virt_addr_valid(start) || !virt_addr_valid(start + size - 1)); switch (direction) { case DMA_FROM_DEVICE: /* invalidate only */ - dmac_inv_range(start, end); - outer_inv_range(__pa(start), __pa(end)); + inner_op = dmac_inv_range; + outer_op = outer_inv_range; break; case DMA_TO_DEVICE: /* writeback only */ - dmac_clean_range(start, end); - outer_clean_range(__pa(start), __pa(end)); + inner_op = dmac_clean_range; + outer_op = outer_clean_range; break; case DMA_BIDIRECTIONAL: /* writeback and invalidate */ - dmac_flush_range(start, end); - outer_flush_range(__pa(start), __pa(end)); + inner_op = dmac_flush_range; + outer_op = outer_flush_range; break; default: BUG(); } + + inner_op(start, start + size); + outer_op(__pa(start), __pa(start) + size); } EXPORT_SYMBOL(dma_cache_maint); |