linux-kernel - Re: [PATCH 2/2] Add Dell laptop driver

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Message-ID: <20080820102125.GA14278@srcf.ucam.org>
Date:	Wed, 20 Aug 2008 11:21:25 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, michael_e_brown@...l.com
Subject: Re: [PATCH 2/2] Add Dell laptop driver

On Tue, Aug 19, 2008 at 11:46:37PM -0700, Andrew Morton wrote:
> > +struct calling_interface_buffer {
> > +	u16 class;
> > +	u16 select;
> > +	volatile u32 input[4];
> > +	volatile u32 output[4];
> > +} __attribute__ ((packed));
> 
> checkpatch will direct you to a fine document.

The address of the structure is passed to the BIOS, and it's then 
modified in system management mode. I think volatile is the right thing 
here? I'll fix up the rest.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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