linux-kernel - Re: dmaengine: fsl-edma: dmatest timeout

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Date:   Tue, 28 Nov 2023 10:38:41 -0500
From:   Frank Li <Frank.li@....com>
To:     wangxiaolei <xiaolei.wang@...driver.com>
Cc:     vkoul@...nel.org, imx@...ts.linux.dev, dmaengine@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: dmaengine: fsl-edma: dmatest timeout

On Tue, Nov 28, 2023 at 12:43:59PM +0800, wangxiaolei wrote:
> Hi
> 
> When I executed the following command to do dmatest on the imx8qm platform,
> 
> I found that the timeout occurred on the current mainline kernel:
> 
> 
> modprobe dmatest run=1 iterations=42
> 

dmatest use mem to mem transfer. It seldom used at actual system. Let me
check it. 

Frank

> 
> I found that the completion interrupt was not received in
> fsl_edma3_tx_handler().
> 
> I didn't find any special configuration from the manual. Can anyone give
> some suggestions?
> 
> 
> thanks
> 
> xiaolei
>