[PATCH V4 2/5] dmaengine/dw_dmac: set residue as total len in dwc_tx_status if status is !DMA_SUCCESS
From: Viresh Kumar <hidden>
Date: 2011-05-05 12:01:44
Also in:
lkml
Subsystem:
dma generic offload engine subsystem, the rest · Maintainers:
Vinod Koul, Linus Torvalds
If transfer status is !=DMA_SUCCESS, return total transfer len as residue, instead of zero. Signed-off-by: Viresh Kumar <redacted> --- drivers/dma/dw_dmac.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index d28cd84..75b32e1 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c@@ -862,7 +862,11 @@ 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; }
--
1.7.2.2