Re: [PATCH] Revert 95f408bb Ryzen DMA related RiSC engine stall fixes

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On 06.12.2018 19:01, Mauro Carvalho Chehab wrote:
Em Thu, 06 Dec 2018 18:18:23 +0100
Markus Dobel <markus.dobel@xxxxxx> escreveu:

Hi everyone,

I will try if the hack mentioned fixes the issue for me on the weekend (but I assume, as if effectively removes the function).

It should, but it keeps a few changes. Just want to be sure that what
would be left won't cause issues. If this works, the logic that would
solve Ryzen DMA fixes will be contained into a single point, making
easier to maintain it.

Hi,

I wanted to have this setup running stable for a few days before replying, that's why I am answering only now.

But yes, as expected, with Mauro's hack, the driver has been stable for me for about a week, with several
scheduled recordings in tvheadend, none of them missed.

So, adding a reliable detection for affected chipsets, where the `if (1)` currently is, should work.

Regards,
Markus



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