linux-kernel - Re: [PATCH 1/1] regmap: debugfs: runtime resume a device when reading registers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <3bc9c762-3573-4d8b-bfcf-6c8e91938dcd@sirena.org.uk>
Date: Wed, 10 Jan 2024 12:23:17 +0000
From: Mark Brown <broonie@...nel.org>
To: Alexander Stein <alexander.stein@...tq-group.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] regmap: debugfs: runtime resume a device when
 reading registers

On Wed, Jan 10, 2024 at 10:53:58AM +0100, Alexander Stein wrote:

> If the registers shall be read from device, runtime resume it in order
> to enable a possiblly attached power domain before accessing the device.

The idea is that the debugfs interface isn't supposed to be disruptive
to the thing being debugged.  It would be better to detect if there will
be problems and report the status as busy.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)