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DMA: txx9dmac: use dma_unmap_single if DMA_COMPL_{SRC,DEST}_UNMAP_SINGLE set 

This patch does not change actual behaviour since dma_unmap_page is just
an alias of dma_unmap_single on MIPS.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Atsushi Nemoto 2009-06-17 13:08:31 -07:00 committed by Ralf Baechle
parent 2e25406fb8
commit 4ac4aa5cc3
1 changed files with 12 additions and 8 deletions
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20
drivers/dma/txx9dmac.c
View File

@ -432,23 +432,27 @@ txx9dmac_descriptor_complete(struct txx9dmac_chan *dc,
list_splice_init(&txd->tx_list, &dc->free_list);
list_move(&desc->desc_node, &dc->free_list);
/*
* We use dma_unmap_page() regardless of how the buffers were
* mapped before they were submitted...
*/
if (!ds) {
dma_addr_t dmaaddr;
if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
dmaaddr = is_dmac64(dc) ?
desc->hwdesc.DAR : desc->hwdesc32.DAR;
dma_unmap_page(chan2parent(&dc->chan), dmaaddr,
desc->len, DMA_FROM_DEVICE);
if (txd->flags & DMA_COMPL_DEST_UNMAP_SINGLE)
dma_unmap_single(chan2parent(&dc->chan),
dmaaddr, desc->len, DMA_FROM_DEVICE);
else
dma_unmap_page(chan2parent(&dc->chan),
dmaaddr, desc->len, DMA_FROM_DEVICE);
}
if (!(txd->flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
dmaaddr = is_dmac64(dc) ?
desc->hwdesc.SAR : desc->hwdesc32.SAR;
dma_unmap_page(chan2parent(&dc->chan), dmaaddr,
desc->len, DMA_TO_DEVICE);
if (txd->flags & DMA_COMPL_SRC_UNMAP_SINGLE)
dma_unmap_single(chan2parent(&dc->chan),
dmaaddr, desc->len, DMA_TO_DEVICE);
else
dma_unmap_page(chan2parent(&dc->chan),
dmaaddr, desc->len, DMA_TO_DEVICE);
}
}