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Message-ID: <5ca7edbb-cf61-45b2-b9ba-888cb157ecbb@gmail.com> Date: Mon, 25 Dec 2023 00:12:06 +0100 From: Heiner Kallweit <hkallweit1@...il.com> To: Marc MERLIN <marc@...lins.org> Cc: Jakub Kicinski <kuba@...nel.org>, Przemek Kitszel <przemyslaw.kitszel@...el.com>, Johannes Berg <johannes@...solutions.net>, netdev@...r.kernel.org, "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org> Subject: Re: [PATCH net v3] net: ethtool: do runtime PM outside RTNL On 24.12.2023 17:30, Marc MERLIN wrote: > On Fri, Dec 15, 2023 at 09:46:34AM -0800, Marc MERLIN wrote: >> On Fri, Dec 15, 2023 at 02:42:01PM +0100, Heiner Kallweit wrote: >>> Why don't you simply disable runtime pm for the affected device as a >>> workaround? This can be done via sysfs. >> >> 1) because I didn't know what the exact bug was and how to work around it :) > > Mmmh, so I need to test an ubuntu kernel (6.5.0-14) because of sound > issues in mainline TOT, and I can't boot the kernel to completion > without hititng this hang bug. I'm not exactly sure which part of the > boot triggers it. > > I can't patch that kernel easily. How exactly do I disable runtime PM > from the kernel command line for "that device" which I'm not even sure Change <device>/power/control from "auto" to "on". > which one it is. If it's the eth device, I already removed the igc > module to prevent it from loading, and I also removed the ethtool > binary, but I'm still getting the hang. > > On the plus side, with 6.6.8 and the old patch which I understand is not > the ideal solution, I can confirm that I've been running problem free > until now, so thanks again for that interim patch. > > Thanks, > Marc
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