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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2013-01-25 11:48:01 +0200
committerVinod Koul <vinod.koul@intel.com>2013-01-28 04:04:36 -0800
commit30d38a3286b140ae8cea84a93cde1f112e352aaf (patch)
treeb8b08a5ffacdfad43531ef38227db39cdbb69fcb /drivers/dma
parentfdf475fa40f1468cf43a72b270f74dc6a4a5c905 (diff)
downloadlinux-30d38a3286b140ae8cea84a93cde1f112e352aaf.tar.bz2
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.c12
-rw-r--r--drivers/dma/dw_dmac_regs.h1
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)