Messages in this thread Patch in this message | | | From | Radhey Shyam Pandey <> | Subject | [PATCH -next 8/8] dmaengine: xilinx_dma: Clear desc_pendingcount in xilinx_dma_reset | Date | Thu, 5 Sep 2019 22:07:04 +0530 |
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From: Nicholas Graumann <nick.graumann@gmail.com>
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 <nick.graumann@gmail.com> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> --- 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 0896e07..010baed 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -1480,6 +1480,7 @@ 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; -- 2.7.4
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