linux-kernel - Re: [PATCH 03/13] edac: Don't initialize csrow's first

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Message-ID: <20120402123323.GA24238@aftab>
Date:	Mon, 2 Apr 2012 14:33:23 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Mauro Carvalho Chehab <mchehab@...hat.com>
Cc:	Linux Edac Mailing List <linux-edac@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/13] edac: Don't initialize csrow's first_page &
 friends when not needed

On Thu, Mar 29, 2012 at 01:45:36PM -0300, Mauro Carvalho Chehab wrote:
> Almost all edac	drivers	initialize first_page, last_page and
> page_mask.

Please call them csrow_info->first_page ... or csrow_info.first_page...
so that we can know of which struct they're members.

> Those vars are used inside the EDAC core, in	order to
> calculate the csrow affected by	an error, by using the routine
> edac_mc_find_csrow_by_page().
> 
> However, very few drivers actually use it:
>         e752x_edac.c
>         e7xxx_edac.c
>         i3000_edac.c
>         i82443bxgx_edac.c
>         i82860_edac.c
>         i82875p_edac.c
>         i82975x_edac.c
>         r82600_edac.c
> 
> There also a few other drivers that have their own calculus
> formula internally using those vars.
> 
> All the others are just wasting time by initializing those
> data.
> 
> While initializing data without using them won't cause any troubles, as
> those information is stored at the wrong place (at csrows structure), it
> is better to remove what is unused, in order to simplify the next patch.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab@...hat.com>
> ---
>  drivers/edac/amd64_edac.c   |   38 ++------------------------------------

For the amd64_edac.c bits:

Acked-by: Borislav Petkov <borislav.petkov@....com>

-- 
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Boris.

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