linux-kernel - Re: Regression from 7627a0edef54 ("ata: ahci: Drop low power policy board type") on reboot (but not cold boot)

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Message-ID: <17cd263d-c659-4cf6-b73d-61233bbe1951@heusel.eu>
Date: Sun, 2 Mar 2025 17:20:48 +0100
From: Christian Heusel <christian@...sel.eu>
To: Salvatore Bonaccorso <carnil@...ian.org>
Cc: Mario Limonciello <mario.limonciello@....com>, 
	Niklas Cassel <cassel@...nel.org>, Christoph Hellwig <hch@...radead.org>, 
	Mika Westerberg <mika.westerberg@...ux.intel.com>, Damien Le Moal <dlemoal@...nel.org>, 
	Jian-Hong Pan <jhp@...lessos.org>, Eric Degenetais <eric.4.debian@...batoulnz.fr>, 
	regressions@...ts.linux.dev, linux-kernel@...r.kernel.org, stable@...r.kernel.org, 
	linux-ide@...r.kernel.org
Subject: Re: Regression from 7627a0edef54 ("ata: ahci: Drop low power policy
 board type") on reboot (but not cold boot)

On 25/03/02 05:03PM, Salvatore Bonaccorso wrote:
> Hi Mario et al,

Hey Salvatore,

> Eric Degenetais reported in Debian (cf. https://bugs.debian.org/1091696) for
> his report, that after 7627a0edef54 ("ata: ahci: Drop low power policy  board
> type") rebooting the system fails (but system boots fine if cold booted).
> 
> His report mentions that the SSD is not seen on warm reboots anymore.
> 
> Does this ring some bell which might be caused by the above bisected[1] commit?

just FYI that we have recently bisected an issue to the same commit:
https://lore.kernel.org/all/e2be6f70-dff6-4b79-bd49-70ec7e27fc1c@heusel.eu/

> What information to you could be helpful to identify the problem?

The other thread also has some debugging steps that could be interesting
for this problem aswell!

Cheers,
Chris

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