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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - `intel_hpd_cancel_work` takes around 1 s during suspend on Dell XPS 13 9360"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104856#c10">Comment # 10</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - `intel_hpd_cancel_work` takes around 1 s during suspend on Dell XPS 13 9360"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104856">bug 104856</a>
from <span class="vcard"><a class="email" href="mailto:pmenzel+bugs.freedesktop@molgen.mpg.de" title="Paul Menzel <pmenzel+bugs.freedesktop@molgen.mpg.de>"> <span class="fn">Paul Menzel</span></a>
</span></b>
<pre>(In reply to Paul Menzel from <a href="show_bug.cgi?id=104856#c9">comment #9</a>)
<span class="quote">> (In reply to Imre Deak from <a href="show_bug.cgi?id=104856#c8">comment #8</a>)
> > (In reply to Paul Menzel from <a href="show_bug.cgi?id=104856#c7">comment #7</a>)
> > > (In reply to Imre Deak from <a href="show_bug.cgi?id=104856#c6">comment #6</a>)
> > > > The problem is that AUX interrupts get disabled too early during suspend,
> > > > after which the driver still performs AUX transfers. Without interrupts
> > > > these transfers will be slow (each taking a 10ms timeout overhead). The
> > > > solution would be to do more fine-grained interrupt disabling during suspend.
> > >
> > > What commit introduced this regression?
> >
> > I don't think this is a regression, we never had support for keeping only
> > AUX interrupts enabled. So it needs to be implemented.
>
> I can only say, that the delay was around 350 ms in the past, see <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED NOTABUG - Suspend takes long time on Dell XPS 13 9360 (Kaby Lake)"
href="show_bug.cgi?id=99650">bug #99650</a>
> [1]. So there is a regression in 4.15 in my opinion.</span >
Sorry, I remembered incorrectly. *Resume* takes up 350 ms, and <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED NOTABUG - Suspend takes long time on Dell XPS 13 9360 (Kaby Lake)"
href="show_bug.cgi?id=99650">bug #99650</a> shows
that suspend always took over a second. So it is *not* a regression. Sorry
about that.
<span class="quote">> [1] <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED NOTABUG - Suspend takes long time on Dell XPS 13 9360 (Kaby Lake)"
href="show_bug.cgi?id=99650">https://bugs.freedesktop.org/show_bug.cgi?id=99650</a></span ></pre>
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