linux-kernel - Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.

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]

Date:	Wed, 4 Apr 2007 12:38:56 -0500
From:	linas@...tin.ibm.com (Linas Vepstas)
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Brad Boyer <flar@...andria.com>, linuxppc-dev@...abs.org,
	Paul Mackerras <paulus@...ba.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.

On Wed, Apr 04, 2007 at 12:34:53PM -0400, David Woodhouse wrote:
> On Wed, 2007-04-04 at 11:22 -0500, Linas Vepstas wrote:
> > The biggest problem would seem to be that the assignment would
> > depend on the detection order; there don't seem to be unique 
> > id's that would help udev consistently assign device names in 
> > consistent order. 
> 
> Of course there are. The different types of ports have different device
> numbers. As long as we don't do anything silly like putting all the
> serial drivers on the same major number, we can tell them apart
> relatively well.

Sure, but if two different pci serial cards are moved around  
to different pci slots, they'll be detected in a different order. 
Similarly if one has some usb-to-serial converter that might get
plugged in after boot, or maybe some serial port that shows up
only when a laptop is docked into a docking station.

--linas
-
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/