Marc Gonzalez <marc_gonza...@sigmadesigns.com> writes: > On 15/11/2017 16:03, Andrew Lunn wrote: > >> On Wed, Nov 15, 2017 at 03:33:47PM +0100, Marc Gonzalez wrote: >> >>> On 15/11/2017 15:17, Andrew Lunn wrote: >>> >>> In our local branch, I have completely disabled flow control support, >>> so I don't have to worry about this problem. >> >> That is an interesting statement. You now know there is an issue here, >> your solution is to fix your private branch and leave mainline as is. > > All my patches are NACKed, what would you have me do? > > Moreover, mainline still has the nb8800_dma_stop() work-around, > which Mans has never seen hang.
Here's the thing, if that trick doesn't work, then the dma queue filling up from real traffic will also hang the controller, which is a much bigger problem. Your test today suggests that this might be the case. -- Måns Rullgård
