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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-24 21:08:26 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-24 21:08:26 +0100 |
| commit | db8862eafe8a5d030a3b02e81b8bb47447c315e3 (patch) | |
| tree | 073ea7b46809bf804134cbf008a593413c02a99c /drivers/dma/mv_xor.c | |
| parent | c5dee6177f4bd2095aab7d9be9f6ebdddd6deee9 (diff) | |
| parent | c20137fc5329eaf24093fc48c52608dc66be8e5c (diff) | |
| download | op-kernel-dev-db8862eafe8a5d030a3b02e81b8bb47447c315e3.zip op-kernel-dev-db8862eafe8a5d030a3b02e81b8bb47447c315e3.tar.gz | |
Merge branch 'linus' into tracing/hw-branch-tracing
Diffstat (limited to 'drivers/dma/mv_xor.c')
| -rw-r--r-- | drivers/dma/mv_xor.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index 0328da0..bcda174 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -311,17 +311,26 @@ mv_xor_run_tx_complete_actions(struct mv_xor_desc_slot *desc, enum dma_ctrl_flags flags = desc->async_tx.flags; u32 src_cnt; dma_addr_t addr; + dma_addr_t dest; + src_cnt = unmap->unmap_src_cnt; + dest = mv_desc_get_dest_addr(unmap); if (!(flags & DMA_COMPL_SKIP_DEST_UNMAP)) { - addr = mv_desc_get_dest_addr(unmap); - dma_unmap_page(dev, addr, len, DMA_FROM_DEVICE); + enum dma_data_direction dir; + + if (src_cnt > 1) /* is xor ? */ + dir = DMA_BIDIRECTIONAL; + else + dir = DMA_FROM_DEVICE; + dma_unmap_page(dev, dest, len, dir); } if (!(flags & DMA_COMPL_SKIP_SRC_UNMAP)) { - src_cnt = unmap->unmap_src_cnt; while (src_cnt--) { addr = mv_desc_get_src_addr(unmap, src_cnt); + if (addr == dest) + continue; dma_unmap_page(dev, addr, len, DMA_TO_DEVICE); } |
