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Date: Thu, 17 Feb 2011 12:54:53 +0530 From: Viresh Kumar <viresh.kumar@...com> To: <dan.j.williams@...el.com>, <linux-kernel@...r.kernel.org> Cc: <shiraz.hashim@...com>, <amit.goel@...com>, <armando.visconti@...com>, Viresh KUMAR <viresh.kumar@...com> Subject: [PATCH 3/7] dw_dmac: call dwc_scan_descriptor from dwc_issue_pending only if active list is empty From: Viresh KUMAR <viresh.kumar@...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@...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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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