From: "Randy.Dunlap" <rddunlap@osdl.org>
To: Ben Srour <srour@cs.wisc.edu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Safe ISA port probing?
Date: Wed, 24 Dec 2003 13:12:23 -0800 [thread overview]
Message-ID: <20031224131223.2c3f497c.rddunlap@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.44.0312241431280.2726-100000@data.upl.cs.wisc.edu>
On Wed, 24 Dec 2003 14:33:54 -0600 (CST) Ben Srour <srour@cs.wisc.edu> wrote:
| Hello,
|
| What is the safest way to go about probing for non-pnp ISA devices on a
| system?
To be very safe, use a parameter and don't do probing, except to
verify that the device is where you have been told it is.
| Is the only solution to start at a base address and increment until you
| find something interesting? Won't this put devices along the way in an
| unsafe state?
It could.
| Any advice/suggestions would be appreciated,
There's not a method that's always safe AFAIK.
It's better to use reads instead of writes if possible.
It's better to begin at the least-used addresses of other
known devices as much as possible (but you know that).
--
~Randy
MOTD: Always include version info.
next prev parent reply other threads:[~2003-12-24 21:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-24 11:10 [PATCH 2.6] fix pci_update_resource() / IORESOURCE_UNSET on PPC Harald Welte
2003-12-24 20:04 ` Greg KH
2003-12-24 20:33 ` Safe ISA port probing? Ben Srour
2003-12-24 21:12 ` Randy.Dunlap [this message]
2003-12-26 8:46 ` [PATCH 2.6] fix pci_update_resource() / IORESOURCE_UNSET on PPC Harald Welte
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