From: Jesse Barnes <jbarnes@engr.sgi.com>
To: Vojtech Pavlik <vojtech@suse.cz>
Cc: dtor_core@ameritech.net, Prarit Bhargava <prarit@sgi.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH][RFC]: Clean up resource allocation in i8042 driver
Date: Fri, 21 Jan 2005 08:47:04 -0800 [thread overview]
Message-ID: <200501210847.04654.jbarnes@engr.sgi.com> (raw)
In-Reply-To: <20050121163540.GC4795@ucw.cz>
On Friday, January 21, 2005 8:35 am, Vojtech Pavlik wrote:
> No. But vacant ports usually return 0xff. The problem here is that 0xff
> is a valid value for the status register, too. Fortunately this patch
> checks for 0xff only after the timeout failed.
On PCs you'll get all 1s, but on some ia64 platforms and others, you'll take a
hard machine check exception if you try to access non-existent memory (mmio,
port space, or otherwise).
Jesse
next prev parent reply other threads:[~2005-01-21 16:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-21 15:14 [PATCH][RFC]: Clean up resource allocation in i8042 driver Prarit Bhargava
2005-01-21 15:43 ` Dmitry Torokhov
2005-01-21 16:35 ` Vojtech Pavlik
2005-01-21 16:43 ` Dmitry Torokhov
2005-01-21 16:47 ` Jesse Barnes [this message]
2005-01-21 17:17 ` Prarit Bhargava
2005-02-14 16:32 ` Prarit Bhargava
2005-02-14 22:46 ` Dmitry Torokhov
2005-02-15 7:21 ` Vojtech Pavlik
2005-01-21 19:26 ` Dave Jones
2005-01-21 21:47 ` Kyle Moffett
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