netdev - Re: [PATCH 2/3] ne: MIPS: Use platform

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Date:	Sun, 29 Apr 2007 02:24:28 +0900 (JST)
From:	Atsushi Nemoto <anemo@....ocn.ne.jp>
To:	jeff@...zik.org
Cc:	linux-mips@...ux-mips.org, netdev@...r.kernel.org,
	ralf@...ux-mips.org, sshtylyov@...mvista.com,
	akpm@...ux-foundation.org
Subject: Re: [PATCH 2/3] ne: MIPS: Use platform_driver for ne on RBTX49XX

On Sat, 28 Apr 2007 11:10:37 -0400, Jeff Garzik <jeff@...zik.org> wrote:
> >  static unsigned int netcard_portlist[] __initdata = {
> > -	0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
> > +#if defined(CONFIG_ISA) || defined(CONFIG_M32R)
> > +	0x300, 0x280, 0x320, 0x340, 0x360, 0x380,
> > +#endif
> > +	0
> 
> This looks a bit strange, and perhaps more difficult to maintain long term.
> 
> I would suggest creating a NEEDS_PORTLIST cpp macro at the top of ne.c, 
> to be defined or undefined based on CONFIG_xxx symbols.  Then, down in 
> the code itself, conditionally include or exclude all portlist related 
> data tables and code.
> 
> Sound sane?

Sure.  Do you mean something like this?


#if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R))
#define NEEDS_PORTLIST
#endif
...
#ifdef NEEDS_PORTLIST
static unsigned int netcard_portlist[] __initdata = {
	0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
};
#endif
...
#ifdef NEEDS_PORTLIST
	int orig_irq = dev->irq;
#endif
...
#ifdef NEEDS_PORTLIST
	/* Last resort. The semi-risky ISA auto-probe. */
	for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
		int ioaddr = netcard_portlist[base_addr];
		dev->irq = orig_irq;
		if (ne_probe1(dev, ioaddr) == 0)
			return 0;
	}
#endif

---
Atsushi Nemoto
-
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