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author | Ingo Molnar <mingo@elte.hu> | 2008-12-24 20:08:26 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-12-24 20:08:26 (GMT) |
commit | db8862eafe8a5d030a3b02e81b8bb47447c315e3 (patch) | |
tree | 073ea7b46809bf804134cbf008a593413c02a99c /drivers/dma/iop-adma.c | |
parent | c5dee6177f4bd2095aab7d9be9f6ebdddd6deee9 (diff) | |
parent | c20137fc5329eaf24093fc48c52608dc66be8e5c (diff) | |
download | linux-fsl-qoriq-db8862eafe8a5d030a3b02e81b8bb47447c315e3.tar.xz |
Merge branch 'linus' into tracing/hw-branch-tracing
Diffstat (limited to 'drivers/dma/iop-adma.c')
-rw-r--r-- | drivers/dma/iop-adma.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c index c7a9306..6be3172 100644 --- a/drivers/dma/iop-adma.c +++ b/drivers/dma/iop-adma.c @@ -85,18 +85,28 @@ iop_adma_run_tx_complete_actions(struct iop_adma_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 = iop_desc_get_dest_addr(unmap, iop_chan); if (!(flags & DMA_COMPL_SKIP_DEST_UNMAP)) { - addr = iop_desc_get_dest_addr(unmap, iop_chan); - 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 = iop_desc_get_src_addr(unmap, iop_chan, src_cnt); + if (addr == dest) + continue; dma_unmap_page(dev, addr, len, DMA_TO_DEVICE); } |