linux-kernel - Re: [PATCH] ne.c fix for hibernate and rmmod oops fix

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Message-ID: <20080830022749.GF17528@spacedout.fries.net>
Date:	Fri, 29 Aug 2008 21:27:49 -0500
From:	David Fries <david@...es.net>
To:	Atsushi Nemoto <anemo@....ocn.ne.jp>
Cc:	linux-kernel@...r.kernel.org, p_gortmaker@...oo.com,
	netdev@...r.kerne.org
Subject: Re: [PATCH] ne.c fix for hibernate and rmmod oops fix

On Sat, Aug 30, 2008 at 12:22:15AM +0900, Atsushi Nemoto wrote:
> On Wed, 27 Aug 2008 23:11:15 -0500, David Fries <david@...es.net> wrote:
> > do_ne_probe uses dev->mem_end special value 0xbad as a flag to deal
> > specially when some bad, but usable devices.  The io port platform
> > resource has a start and end, but if start is 0x300 and end is 0xbad,
> > it will just fail with io ports in use and not probe the device.  Is
> > using the flag IORESOURCE_DISABLED acceptable?  There doesn't seem to
> > be any good way to pass some extra driver dependent data through to
> > the platform probe function.
> > 
> > +	/* Bad, crippled, how about disabled?
> > +	 * Any other suggestions for passing this through?
> > +	 */
> > +	if (dev->mem_end == BAD)
> > +		r[0].flags |= IORESOURCE_DISABLED;
> 
> I'm not sure IORESOURCE_DISABLED is OK, but (ab)using r[0].name might
> be safer. Something like this:
> 
> 	if (dev->mem_end == BAD)
> 		r[0].name = "bad";

Works for me, thanks for the suggestion, it was just what I was
looking for.

> With your patch, cleanup_module() and ne_exit() is exactly same.  How
> about unifying them?

They didn't use to be the same, with all the cleanup I didn't notice
that they became the same.  ne_exit is no more, cleanup_module for
both module and built in.

> >     mdelay(10) replaced by msleep(10) to give up the CPU.
> 
> I think this part is worth to do by separate patch.

Now that you mention it, it really doesn't have anything to do with
the rest of the changes.  I suppose.  

> > +	struct resource r[2] = {
> > +		{
> > +			.name = "io_port",
> > +			.flags = IORESOURCE_IO},
> > +		{
> > +			.name = "irq",
> > +			.flags = IORESOURCE_IRQ} };
> 
> This .name initialization seems a bit redundant for me.  They can be
> left NULL.

Changed.

Thanks for the feedback, I'll submit round two shortly.

-- 
David Fries <david@...es.net>
http://fries.net/~david/ (PGP encryption key available)
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