From: Shunsuke Mie Date: Tue, 11 Apr 2023 10:17:58 +0000 (+0900) Subject: dmaengine: dw-edma: Fix to enable to issue dma request on DMA processing X-Git-Tag: v6.1.63~5655 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a8c24a80de0096bce04db90271635ece9d30b5bf;p=sdk%2Femulator%2Femulator-kernel.git dmaengine: dw-edma: Fix to enable to issue dma request on DMA processing [ Upstream commit 970b17dfe264a9085ba4e593730ecfd496b950ab ] The issue_pending request is ignored while driver is processing a DMA request. Fix to issue the pending requests on any dma channel status. Fixes: e63d79d1ffcd ("dmaengine: Add Synopsys eDMA IP core driver") Signed-off-by: Shunsuke Mie Link: https://lore.kernel.org/r/20230411101758.438472-2-mie@igel.co.jp Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index cb46cbef212a..ef4cdcf6beba 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -279,9 +279,12 @@ static void dw_edma_device_issue_pending(struct dma_chan *dchan) struct dw_edma_chan *chan = dchan2dw_edma_chan(dchan); unsigned long flags; + if (!chan->configured) + return; + spin_lock_irqsave(&chan->vc.lock, flags); - if (chan->configured && chan->request == EDMA_REQ_NONE && - chan->status == EDMA_ST_IDLE && vchan_issue_pending(&chan->vc)) { + if (vchan_issue_pending(&chan->vc) && chan->request == EDMA_REQ_NONE && + chan->status == EDMA_ST_IDLE) { chan->status = EDMA_ST_BUSY; dw_edma_start_transfer(chan); }