From 760e399c3b596726b2946e1951bdb3a10551fe6d Mon Sep 17 00:00:00 2001 From: Nicholas Graumann Date: Thu, 16 Jan 2020 12:21:09 +0800 Subject: [PATCH] dmaengine: xilinx_dma: Clear desc_pendingcount in xilinx_dma_reset [ Upstream commit 8a631a5a0f7d4a4a24dba8587d5d9152be0871cc ] Whenever we reset the channel, we need to clear desc_pendingcount along with desc_submitcount. Otherwise when a new transaction is submitted, the irq coalesce level could be programmed to an incorrect value in the axidma case. This behavior can be observed when terminating pending transactions with xilinx_dma_terminate_all() and then submitting new transactions without releasing and requesting the channel. Signed-off-by: Nicholas Graumann Signed-off-by: Radhey Shyam Pandey Link: https://lore.kernel.org/r/1571150904-3988-8-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin Signed-off-by: Yang Yingliang --- drivers/dma/xilinx/xilinx_dma.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 8aec137b4fca..d56b6b0e22a8 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -1427,6 +1427,7 @@ static int xilinx_dma_reset(struct xilinx_dma_chan *chan) chan->err = false; chan->idle = true; + chan->desc_pendingcount = 0; chan->desc_submitcount = 0; return err; -- GitLab