linux-kernel - Re: [PATCH v4 10/18] sh: Remove unnecessary of_platform

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Message-ID: <20160512183822.GL21636@brightrain.aerifal.cx>
Date:	Thu, 12 May 2016 14:38:22 -0400
From:	Rich Felker <dalias@...c.org>
To:	Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:	robh+dt@...nel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, arnd@...db.de,
	shawnguo@...nel.org, catalin.marinas@....com,
	grant.likely@...aro.org, olof@...om.net, linux@....linux.org.uk,
	yamada.masahiro@...ionext.com, guohanjun@...wei.com,
	Yoshinori Sato <ysato@...rs.sourceforge.jp>
Subject: Re: [PATCH v4 10/18] sh: Remove unnecessary of_platform_populate
 with default match table

On Thu, May 12, 2016 at 08:06:07PM +0800, Kefeng Wang wrote:
> After patch "of/platform: Add common method to populate default bus",
> it is possible for arch code to remove unnecessary callers about the
> of_platform_populate with default match table.

s/about the/of/ ?

> Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> Cc: Rich Felker <dalias@...c.org>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
> ---
>  arch/sh/boards/of-generic.c | 14 --------------
>  1 file changed, 14 deletions(-)
> 
> diff --git a/arch/sh/boards/of-generic.c b/arch/sh/boards/of-generic.c
> index b4d4313..911ffb9 100644
> --- a/arch/sh/boards/of-generic.c
> +++ b/arch/sh/boards/of-generic.c
> @@ -9,7 +9,6 @@
>   */
>  
>  #include <linux/of.h>
> -#include <linux/of_platform.h>
>  #include <linux/of_fdt.h>
>  #include <linux/clocksource.h>
>  #include <linux/irqchip.h>
> @@ -179,16 +178,3 @@ void __init arch_init_clk_ops(struct sh_clk_ops **ops, int idx)
>  void __init plat_irq_setup(void)
>  {
>  }
> -
> -static int __init sh_of_device_init(void)
> -{
> -	pr_info("SH generic board support: populating platform devices\n");
> -	if (of_have_populated_dt()) {
> -		of_platform_populate(NULL, of_default_bus_match_table,
> -				     NULL, NULL);
> -	} else {
> -		pr_crit("Device tree not populated\n");
> -	}
> -	return 0;
> -}
> -arch_initcall_sync(sh_of_device_init);
> -- 
> 1.7.12.4

I have not tested this, but as long as the new arch-generic code takes
place at the same point in the init sequence (arch_initcall_sync), as
it seems to, I don't expect any sh-specific breakage. In general I'm
happy to see this kind of change.

Rich