diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index 7a567f924538..cd10f9c6d217 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -230,6 +230,8 @@ static int dw_edma_device_pause(struct dma_chan *dchan) struct dw_edma_chan *chan = dchan2dw_edma_chan(dchan); int err = 0; + guard(spinlock_irqsave)(&chan->vc.lock); + if (!chan->configured) err = -EPERM; else if (chan->status != EDMA_ST_BUSY) @@ -247,6 +249,8 @@ static int dw_edma_device_resume(struct dma_chan *dchan) struct dw_edma_chan *chan = dchan2dw_edma_chan(dchan); int err = 0; + guard(spinlock_irqsave)(&chan->vc.lock); + if (!chan->configured) { err = -EPERM; } else if (chan->status != EDMA_ST_PAUSE) { @@ -297,11 +301,9 @@ 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 (vchan_issue_pending(&chan->vc) && chan->request == EDMA_REQ_NONE && + if (chan->configured && 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);