linux-kernel - Re: Changes to sysfs PM layer break userspace

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: <20061219200803.GA14332@srcf.ucam.org>
Date:	Tue, 19 Dec 2006 20:08:03 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	linux-kernel@...r.kernel.org, david-b@...bell.net, gregkh@...e.de
Subject: Re: Changes to sysfs PM layer break userspace

On Tue, Dec 19, 2006 at 09:03:21PM +0100, Arjan van de Ven wrote:

> humm shouldn't the driver do this when the interface is brought down?
> sounds like you're playing with fire to do this behind the drivers'
> back....

I'm not sure. Suspending the chip means you lose things like link beat 
detection, so it's not something you necessarily want to automatically 
tie to something like interface status. Some chips support more 
fine-grained power management, so we could do something more sensible in 
that case - but right now, there doesn't seem to be a lot of driver 
support for it.

-- 
Matthew Garrett | mjg59@...f.ucam.org
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/