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Subject[PATCH 3/7] dw_dmac: call dwc_scan_descriptor from dwc_issue_pending only if active list is empty
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From: Viresh KUMAR <viresh.kumar@st.com>

dwc_scan_descriptor was called even when there were descriptors in active list.
Checking if active list is empty or not.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
---
drivers/dma/dw_dmac.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 6dd03b0..3bf4772 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -848,7 +848,7 @@ static void dwc_issue_pending(struct dma_chan *chan)
struct dw_dma_chan *dwc = to_dw_dma_chan(chan);

spin_lock_bh(&dwc->lock);
- if (!list_empty(&dwc->queue))
+ if (!list_empty(&dwc->queue) && list_empty(&dwc->active_list))
dwc_scan_descriptors(to_dw_dma(chan->device), dwc);
spin_unlock_bh(&dwc->lock);
}
--
1.7.2.2


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