<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <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#c9">Comment # 9</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 <a class="email" href="mailto:pmenzel+bugs.freedesktop@molgen.mpg.de" title="Paul Menzel <pmenzel+bugs.freedesktop@molgen.mpg.de>"> Paul Menzel</a> <pre>(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 and resume take 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. [1] <a class="bz_bug_link bz_status_CLOSED bz_closed" title="CLOSED NOTABUG - Suspend and resume take 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></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>