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authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2013-10-18 21:35:32 +0400
committerDan Williams <dan.j.williams@intel.com>2013-11-14 23:04:38 +0400
commit54f8d501e842879143e867e70996574a54d1e130 (patch)
tree1fcd65a5152d330167f5eefba5cc5d514ec91da1 /drivers/dma/at_hdmac.c
parent6f57fd0578dff23a4bd16118f0cb4201bcec91f1 (diff)
downloadlinux-54f8d501e842879143e867e70996574a54d1e130.tar.xz
dmaengine: remove DMA unmap from drivers
Remove support for DMA unmapping from drivers as it is no longer needed (DMA core code is now handling it). Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [djbw: fix up chan2parent() unused warning in drivers/dma/dw/core.c] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/at_hdmac.c')
-rw-r--r--drivers/dma/at_hdmac.c25
1 files changed, 0 insertions, 25 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index cc7098ddf9d4..6deaefbec0b0 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -344,32 +344,7 @@ atc_chain_complete(struct at_dma_chan *atchan, struct at_desc *desc)
/* move myself to free_list */
list_move(&desc->desc_node, &atchan->free_list);
- /* unmap dma addresses (not on slave channels) */
dma_descriptor_unmap(txd);
- if (!atchan->chan_common.private) {
- struct device *parent = chan2parent(&atchan->chan_common);
- if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
- if (txd->flags & DMA_COMPL_DEST_UNMAP_SINGLE)
- dma_unmap_single(parent,
- desc->lli.daddr,
- desc->len, DMA_FROM_DEVICE);
- else
- dma_unmap_page(parent,
- desc->lli.daddr,
- desc->len, DMA_FROM_DEVICE);
- }
- if (!(txd->flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
- if (txd->flags & DMA_COMPL_SRC_UNMAP_SINGLE)
- dma_unmap_single(parent,
- desc->lli.saddr,
- desc->len, DMA_TO_DEVICE);
- else
- dma_unmap_page(parent,
- desc->lli.saddr,
- desc->len, DMA_TO_DEVICE);
- }
- }
-
/* for cyclic transfers,
* no need to replay callback function while stopping */
if (!atc_chan_is_cyclic(atchan)) {