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>
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 721beaf..7f9f332 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -333,18 +333,18 @@
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 @@
prev->lli.llp = 0;
first->txd.flags = flags;
- first->len = len;
+ first->total_len = len;
return &first->txd;
@@ -937,7 +937,7 @@
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 13000d2..833b4cf 100644
--- a/drivers/dma/dw_dmac_regs.h
+++ b/drivers/dma/dw_dmac_regs.h
@@ -296,6 +296,7 @@
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)