linux-kernel - Re: Nvidia cable detection problems (was [PATCH] amd74xx: don't configure udma mode higher than BIOS did)

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: <20070205220232.3e73297b@localhost.localdomain>
Date:	Mon, 5 Feb 2007 22:02:32 +0000
From:	Alan <alan@...rguk.ukuu.org.uk>
To:	"Bartlomiej Zolnierkiewicz" <bzolnier@...il.com>
Cc:	"Tejun Heo" <htejun@...il.com>,
	"Allen Martin" <AMartin@...dia.com>, linux-ide@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Nvidia cable detection problems (was [PATCH] amd74xx: don't
 configure udma mode higher than BIOS did)

> Since we are already using UDMA mode set by BIOS to determine if 80c cable
> is present so why not also use it to determine if the 40c cable is present?
> 
> I mean just ignoring AMD_CABLE_DETECT register for NVIDIA devices.
> 
> 2-lines change and we wouldn't have to deal with ACPI at ell.

And as I explained earlier you get false values. The existing hack is
dodgy as well and breaks on suspend/resume then loading the driver for
one. It's probably the best that can be done without ACPI but the ACPI
_GTM/_STM methods are pretty clean so its not hard to use them. You need
them for full suspend/resume support anyway.

Alan
-
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/