diff options
| -rw-r--r-- | arch/arm/common/dmabounce.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c index 2e635b814c14..272702accd8b 100644 --- a/arch/arm/common/dmabounce.c +++ b/arch/arm/common/dmabounce.c @@ -281,10 +281,14 @@ map_single(struct device *dev, void *ptr, size_t size, ptr = buf->safe; dma_addr = buf->safe_dma_addr; + } else { + /* + * We don't need to sync the DMA buffer since + * it was allocated via the coherent allocators. + */ + consistent_sync(ptr, size, dir); } - consistent_sync(ptr, size, dir); - return dma_addr; } @@ -397,7 +401,10 @@ sync_single(struct device *dev, dma_addr_t dma_addr, size_t size, default: BUG(); } - consistent_sync(buf->safe, size, dir); + /* + * No need to sync the safe buffer - it was allocated + * via the coherent allocators. + */ } else { consistent_sync(dma_to_virt(dev, dma_addr), size, dir); } |