linux-kernel - Re: dvb usb issues since kernel 4.9

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Date:   Mon, 8 Jan 2018 18:55:51 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Josef Griebichler <griebichler.josef@....at>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alan Stern <stern@...land.harvard.edu>,
        USB list <linux-usb@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Rik van Riel <riel@...hat.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Hannes Frederic Sowa <hannes@...hat.com>,
        Jesper Dangaard Brouer <jbrouer@...hat.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        Jonathan Corbet <corbet@....net>,
        LMML <linux-media@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        David Miller <davem@...emloft.net>
Subject: Re: dvb usb issues since kernel 4.9


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> On Sat, Jan 6, 2018 at 11:54 AM, Mauro Carvalho Chehab
> <mchehab@...pensource.com> wrote:
> >
> > Em Sat, 6 Jan 2018 16:04:16 +0100
> > "Josef Griebichler" <griebichler.josef@....at> escreveu:
> >>
> >> the causing commit has been identified.
> >> After reverting commit https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4cd13c21b207e80ddb1144c576500098f2d5f882
> >> its working again.
> >
> > Just replying to me won't magically fix this. The ones that were involved on
> > this patch should also be c/c, plus USB people. Just added them.
> 
> Actually, you seem to have added an odd subset of the people involved.
> 
> For example, Ingo - who actually committed that patch - wasn't on the cc.
> 
> I do think we need to simply revert that patch. It's very simple: it
> has been reported to lead to actual problems for people, and we don't
> fix one problem and then say "well, it fixed something else" when
> something breaks.
> 
> When something breaks, we either unbreak it, or we revert the change
> that caused the breakage.
> 
> It's really that simple. That's what "no regressions" means.  We don't
> accept changes that cause regressions. This one did.

Yeah, absolutely - for the revert:

   Acked-by: Ingo Molnar <mingo@...nel.org>

as I doubt we have enough time to root-case this properly.

Thanks,

	Ingo