linux-kernel - Re: [PATCH] fix kmalloc(0) in arch/ia64/pci/pci.c

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Date:	Fri, 18 May 2007 09:48:57 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org,
	tony.luck@...el.com
Subject: Re: [PATCH] fix kmalloc(0) in arch/ia64/pci/pci.c

On Thu, 17 May 2007 12:19:59 -0700
Andrew Morton <akpm@...ux-foundation.org> wrote:

> > +	if (!windows)
> > +		goto out2;
> >  	controller->window = kmalloc_node(sizeof(*controller->window) * windows,
> >  			GFP_KERNEL, controller->node);
> >  	if (!controller->window)
> > 
> 
> This is a significant change in functionality.  Can you please explain why
> it doesn't break things?
> 
Sorry for long RTT. I found no problem on my machine, but....
I realized I misunderstood how kmalloc(0) works....sorry, please drop patch.

I'll ask a pci guy to fix this.

-Kame

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