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| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2013-01-25 11:48:01 +0200 |
|---|---|---|
| committer |   Vinod Koul <vinod.koul@intel.com> | 2013-01-28 04:04:36 -0800 |
| commit | 30d38a3286b140ae8cea84a93cde1f112e352aaf (patch) | |
| tree | b8b08a5ffacdfad43531ef38227db39cdbb69fcb /drivers/dma | |
| parent | dw_dmac: remove unnecessary tx_list field in dw_dma_chan (diff) | |
| download | linux-dev-30d38a3286b140ae8cea84a93cde1f112e352aaf.tar.xz linux-dev-30d38a3286b140ae8cea84a93cde1f112e352aaf.zip | |
dw_dmac: introduce total_len field in struct dw_desc
By this new field we distinguish a total length of the chain and the individual
length of each descriptor in the chain.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/dw_dmac.c | 12 | ||||
| -rw-r--r-- | drivers/dma/dw_dmac_regs.h | 1 |
2 files changed, 7 insertions, 6 deletions
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 721beafe8f7a..7f9f3324de17 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -333,18 +333,18 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc, if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP)) { if (txd->flags & DMA_COMPL_DEST_UNMAP_SINGLE) dma_unmap_single(parent, desc->lli.dar, - desc->len, DMA_FROM_DEVICE); + desc->total_len, DMA_FROM_DEVICE); else dma_unmap_page(parent, desc->lli.dar, - desc->len, DMA_FROM_DEVICE); + desc->total_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.sar, - desc->len, DMA_TO_DEVICE); + desc->total_len, DMA_TO_DEVICE); else dma_unmap_page(parent, desc->lli.sar, - desc->len, DMA_TO_DEVICE); + desc->total_len, DMA_TO_DEVICE); } } @@ -774,7 +774,7 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, prev->lli.llp = 0; first->txd.flags = flags; - first->len = len; + first->total_len = len; return &first->txd; @@ -937,7 +937,7 @@ slave_sg_fromdev_fill_desc: prev->lli.ctllo |= DWC_CTLL_INT_EN; prev->lli.llp = 0; - first->len = total_len; + first->total_len = total_len; return &first->txd; diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h index 13000d2b3352..833b4cf9843d 100644 --- a/drivers/dma/dw_dmac_regs.h +++ b/drivers/dma/dw_dmac_regs.h @@ -296,6 +296,7 @@ struct dw_desc { struct list_head tx_list; struct dma_async_tx_descriptor txd; size_t len; + size_t total_len; }; #define to_dw_desc(h) list_entry(h, struct dw_desc, desc_node) |