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dmaengine/dw_dmac: set residue as total len in dwc_tx_status if status is !DMA_SUCCESS 

If transfer status is !=DMA_SUCCESS, return total transfer len as residue,
instead of zero.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
hifive-unleashed-5.1
Viresh Kumar 2011-04-15 16:03:35 +05:30 committed by Vinod Koul
parent 5fedefb87b
commit abf53902dc
1 changed files with 5 additions and 1 deletions
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6
drivers/dma/dw_dmac.c
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@ -860,7 +860,11 @@ dwc_tx_status(struct dma_chan *chan,
ret = dma_async_is_complete(cookie, last_complete, last_used);
}
dma_set_tx_state(txstate, last_complete, last_used, 0);
if (ret != DMA_SUCCESS)
dma_set_tx_state(txstate, last_complete, last_used,
dwc_first_active(dwc)->len);
else
dma_set_tx_state(txstate, last_complete, last_used, 0);
return ret;
}