linux-kernel - Re: [PATCH] mtd: unify mtd partition/device registration

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Message-Id: <20081113.224350.18312549.anemo@mba.ocn.ne.jp>
Date:	Thu, 13 Nov 2008 22:43:50 +0900 (JST)
From:	Atsushi Nemoto <anemo@....ocn.ne.jp>
To:	vapier@...too.org
Cc:	linux-mtd@...ts.infradead.org, dwmw2@...radead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: unify mtd partition/device registration

On Wed, 12 Nov 2008 18:38:53 -0500, Mike Frysinger <vapier@...too.org> wrote:
> Rather than having every map/mtd driver doing the same sequence of
> registering partitions and/or devices, implement common parse_mtd().
> 
> Signed-off-by: Mike Frysinger <vapier@...too.org>
> ---
>  drivers/mtd/mtdcore.c   |   37 +++++++++++++++++++++++++++++++++++++
>  include/linux/mtd/mtd.h |    3 +++
>  2 files changed, 40 insertions(+), 0 deletions(-)

I like this idea.

> +int parse_mtd(struct mtd_info *mtd, const char **probe_types,
> +              struct mtd_partition *parts, int nr_parts)
> +{
> +#ifdef CONFIG_MTD_PARTITIONS
> +	const char *default_part_probe_types[] = {
> +		"cmdlinepart",
> +		"RedBoot",
> +		NULL
> +	};

But I'm not sure this default_part_probe_types is appropriate.

How about enclose each parser with #ifdefs?

	const char *default_part_probe_types[] = {
#ifdef CONFIG_MTD_CMDLINE_PARTS
		"cmdlinepart",
#endif
#ifdef CONFIG_MTD_REDBOOT_PARTS
		"RedBoot",
#endif
		NULL
	};

This get rid of "RedBoot partition parsing not available" noise in
boot message when you use default_part_probe_types without
MTD_REDBOOT_PARTS.

---
Atsushi Nemoto
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