diff options
| author | Shunsuke Mie <mie@igel.co.jp> | 2023-04-11 13:17:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-11 17:03:37 +0300 |
| commit | a8c24a80de0096bce04db90271635ece9d30b5bf (patch) | |
| tree | fe81bae63d2fc91acaa621bb67ceb9aca8af0367 /drivers/dma | |
| parent | 7d28c500e5bbc8bcd716c0b3f9fff71641cfa66f (diff) | |
| download | linux-a8c24a80de0096bce04db90271635ece9d30b5bf.tar.xz | |
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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/dw-edma/dw-edma-core.c | 7 |
1 files changed, 5 insertions, 2 deletions
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); } |