From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Len Brown <lenb@kernel.org>
Cc: Rodrigo Luiz <rodrigo@gus-mg.org>,
malattia@linux.it, linux-acpi@vger.kernel.org
Subject: Re: [PATCH] ACPICA: delete check for AML access to port 0x81-83
Date: Thu, 9 Apr 2009 07:23:46 +0100 [thread overview]
Message-ID: <20090409062346.GA8101@srcf.ucam.org> (raw)
In-Reply-To: <alpine.LFD.2.00.0904071754230.4799@localhost.localdomain>
On Tue, Apr 07, 2009 at 05:56:09PM -0400, Len Brown wrote:
> From: Len Brown <len.brown@intel.com>
>
> Sony laptops apparently write 4-bytes (rather than 1 byte)
> to debug port 0x80, which spews error messages:
So admittedly I should just check the spec here instead, but: what does
a 4 byte write to an io port mean? It seems a bit odd that Sonys could
be scribbling over DMA1 without causing any problems. Is Windows turning
this into a single byte write to the defined io port instead?
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2009-04-09 6:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-06 0:27 sony-laptop: ACPI Exception when a Fn-Key is pressed Rodrigo Luiz
2009-04-06 11:01 ` Mattia Dongili
2009-04-06 13:13 ` Rodrigo Luiz
2009-04-07 2:13 ` yakui_zhao
2009-04-07 4:54 ` Len Brown
2009-04-07 5:00 ` Len Brown
2009-04-07 5:12 ` Len Brown
2009-04-07 19:46 ` Rodrigo Luiz
2009-04-07 21:27 ` Len Brown
2009-04-07 21:56 ` [PATCH] ACPICA: delete check for AML access to port 0x81-83 Len Brown
2009-04-08 1:20 ` Rodrigo Luiz
2009-04-08 1:46 ` Mattia Dongili
2009-04-09 6:23 ` Matthew Garrett [this message]
2009-04-09 14:56 ` Moore, Robert
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