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 <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>

diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index cb46cbef212ab9852037f63fc668044e214debb9..ef4cdcf6beba0b4cc709a1f4c08815e42a2a245d 100644 (file)
--- 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);
        }