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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2013-10-18 19:35:32 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2013-11-14 11:04:38 -0800 |
| commit | 54f8d501e842879143e867e70996574a54d1e130 (patch) | |
| tree | 1fcd65a5152d330167f5eefba5cc5d514ec91da1 /drivers/dma/timb_dma.c | |
| parent | 6f57fd0578dff23a4bd16118f0cb4201bcec91f1 (diff) | |
| download | op-kernel-dev-54f8d501e842879143e867e70996574a54d1e130.zip op-kernel-dev-54f8d501e842879143e867e70996574a54d1e130.tar.gz | |
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/timb_dma.c')
| -rw-r--r-- | drivers/dma/timb_dma.c | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c index 1d0c988..4506a7b 100644 --- a/drivers/dma/timb_dma.c +++ b/drivers/dma/timb_dma.c @@ -154,38 +154,6 @@ static bool __td_dma_done_ack(struct timb_dma_chan *td_chan) return done; } -static void __td_unmap_desc(struct timb_dma_chan *td_chan, const u8 *dma_desc, - bool single) -{ - dma_addr_t addr; - int len; - - addr = (dma_desc[7] << 24) | (dma_desc[6] << 16) | (dma_desc[5] << 8) | - dma_desc[4]; - - len = (dma_desc[3] << 8) | dma_desc[2]; - - if (single) - dma_unmap_single(chan2dev(&td_chan->chan), addr, len, - DMA_TO_DEVICE); - else - dma_unmap_page(chan2dev(&td_chan->chan), addr, len, - DMA_TO_DEVICE); -} - -static void __td_unmap_descs(struct timb_dma_desc *td_desc, bool single) -{ - struct timb_dma_chan *td_chan = container_of(td_desc->txd.chan, - struct timb_dma_chan, chan); - u8 *descs; - - for (descs = td_desc->desc_list; ; descs += TIMB_DMA_DESC_SIZE) { - __td_unmap_desc(td_chan, descs, single); - if (descs[0] & 0x02) - break; - } -} - static int td_fill_desc(struct timb_dma_chan *td_chan, u8 *dma_desc, struct scatterlist *sg, bool last) { @@ -294,10 +262,6 @@ static void __td_finish(struct timb_dma_chan *td_chan) list_move(&td_desc->desc_node, &td_chan->free_list); dma_descriptor_unmap(txd); - if (!(txd->flags & DMA_COMPL_SKIP_SRC_UNMAP)) - __td_unmap_descs(td_desc, - txd->flags & DMA_COMPL_SRC_UNMAP_SINGLE); - /* * The API requires that no submissions are done from a * callback, so we don't need to drop the lock here |
