linux-kernel - Re: [PATCH] powerpc/legacy_serial: fix incorrect placement of _

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Message-id: <2241214.NPvmYhqHCQ@amdc1032>
Date:	Tue, 08 Oct 2013 11:33:29 +0200
From:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:	Michael Ellerman <michael@...erman.id.au>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev@...ts.ozlabs.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Paul Mackerras <paulus@...ba.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/legacy_serial: fix incorrect placement of
 __initdata tag

On Tuesday, October 08, 2013 02:56:23 PM Michael Ellerman wrote:
> On Thu, Oct 03, 2013 at 01:51:27PM +0200, Bartlomiej Zolnierkiewicz wrote:
> > On Tuesday, October 01, 2013 04:13:25 PM Michael Ellerman wrote:
> > > On Mon, Sep 30, 2013 at 03:11:42PM +0200, Bartlomiej Zolnierkiewicz wrote:
> > > > __initdata tag should be placed between the variable name and equal
> > > > sign for the variable to be placed in the intended .init.data section.
> > > 
> > > I see lots of other occurences of that in arch/powerpc. Why not send a
> > > single patch to update them all?
> > 
> > The other occurences while not following the preferred kernel coding style
> > are (probably) working OK with gcc. This particular occurence just doesn't
> > work as it should.
> 
> Why would the other occurrences work but not this one?

Because gcc seems to generate the correct code for things like i.e. this one:

struct of_device_id __initdata legacy_serial_parents[]

but not for ones like this:

struct __initdata of_device_id legacy_serial_parents[]

> Regardless, why don't we just do a single patch to clean them all up to
> match coding style and (probably) do what they're intended.

Because:

- fixing this occurence changes runtime, fixing others won't

- there were no such request from powerpc Maintainers

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

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