Hi, On 9/4/20 6:34 PM, Andy Shevchenko wrote: > It becomes a bit annoying to fix dmatest after almost each release. > The commit 6b41030fdc79 ("dmaengine: dmatest: Restore default for channel") > broke my use case when I tried to start busy channel. > > So, before this patch > ... > echo "busy_chan" > channel > echo 1 > run > sh: write error: Device or resource busy > [ 1013.868313] dmatest: Could not start test, no channels configured > > After I have got it run on *ALL* available channels. Is not that controlled with max_channels? > > dmatest compiled as a module. > > Fix this ASAP, otherwise I will send revert of this and followed up patch next > week. > I don't quite get it, you are sending revert and then a fix rather then helping with a fix? What is reason for such extreme (and non-cooperative) flow? P.S. Unfortunately, I do not have access to hardware to run reproducer. Cheers Vladimir