linux-kernel - Re: [PATCH] ARM: ks8695: fix _

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Message-ID: <18237653.x9qPaNvtCU@wuerfel>
Date:	Tue, 09 Feb 2016 12:14:15 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	Greg Ungerer <gerg@...inux.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: ks8695: fix __initdata annotation

On Tuesday 09 February 2016 10:00:30 Uwe Kleine-König wrote:
> > diff --git a/arch/arm/mach-ks8695/board-og.c b/arch/arm/mach-ks8695/board-og.c
> > index 1f4f2f4f25bb..fa1a7c2ca2bb 100644
> > --- a/arch/arm/mach-ks8695/board-og.c
> > +++ b/arch/arm/mach-ks8695/board-og.c
> > @@ -80,7 +80,7 @@ static void __init og_pci_bus_reset(void)
> >  #define      S8250_VIRT      0xf4000000
> >  #define      S8250_SIZE      0x00100000
> >  
> > -static struct __initdata map_desc og_io_desc[] = {
> > +static struct map_desc __initdata og_io_desc[] = {
> 
> I would have expected that
> 
> +static struct map_desc og_io_desc[] __initdata = {
> 
> is the correct variant?
> 

I think those two mean the exact same thing, and we have tons of examples
for either one in the kernel, unlike the one I removed. I have
verified that the resulting object files are identical.

Can you point me to some documentation that clarifies which one to use,
and why?

	Arnd