linux-kernel - Re: [RFQ] New driver architecture questions

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Message-ID: <b1bc6a000905141758y20aa7852h8b1012e3da6f8c0f@mail.gmail.com>
Date:	Thu, 14 May 2009 17:58:03 -0700
From:	adam radford <aradford@...il.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	"Mukker, Atul" <Atul.Mukker@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Austria, Winston" <Winston.Austria@....com>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>
Subject: Re: [RFQ] New driver architecture questions

On Wed, May 13, 2009 at 9:16 PM, Jeff Garzik <jeff@...zik.org> wrote:
> Taking drivers/net/e1000e as an
> example,
>
>        hw.h            hardware-specific defines, ~cross-OS
>        82571.c         code specific to 8257x chip family, ~cross-OS

82571.c contains Linux specific code such as:  including Linux
specific header files, calls to msleep().

>        ich8lan.c       code specific to ICH8+ chip family, ~cross-OS

ich8lan.c contains Linux specific code such as:  might_sleep(),
mutex_trylock(), mutex_unlock(), udelay(), msleep(), writel(), readl().

Perhaps this is a bad example?  It seems like the "common layer"
sections that are "cross-OS" shouldn't contain any Linux specific code at all.

-Adam
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