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dmaengine: dw-edma: Fix to enable to issue dma request on DMA processing

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[ Upstream commit 970b17dfe2 ]

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: e63d79d1ff ("dmaengine: Add Synopsys eDMA IP core driver")
Signed-off-by: Shunsuke Mie <mie@igel.co.jp>
Link: https://lore.kernel.org/r/20230411101758.438472-2-mie@igel.co.jp
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shunsuke Mie 2023-04-11 19:17:58 +09:00 committed by Greg Kroah-Hartman
parent 7d28c500e5
commit a8c24a80de
1 changed files with 5 additions and 2 deletions
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7
drivers/dma/dw-edma/dw-edma-core.c
View file

@ -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);
}