linux-kernel - Re: [PATCH v2] ARM: EXYNOS: Use platform device name as power domain name

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Message-id: <55001146.3040304@samsung.com>
Date:	Wed, 11 Mar 2015 18:56:22 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	Kukjin Kim <kgene@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>
Subject: Re: [PATCH v2] ARM: EXYNOS: Use platform device name as power domain
 name

On 03/11/2015 06:54 PM, Krzysztof Kozlowski wrote:
> The power domain nodes in DTS may be very generic (e.g. "power-domain"
> for Exynos 5420) making it very hard to debug:
> 
> $ cat /sys/kernel/debug/pm_genpd/pm_genpd_summary
>     domain                      status         slaves
> power-domain                    on
> 
> Use platform device name instead so the names will be a little more user
> friendly:
>     domain                      status         slaves
> 100440e0.power-domain           on
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Suggested-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
> Suggested-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
> Reviewed-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
> ---
> 
> Notes:
>     Changes since v1:
>     1. Add Javier's reviewed-by.
> 
>  arch/arm/mach-exynos/pm_domains.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c
> index 37266a826437..84e1d9f4d76c 100644
> --- a/arch/arm/mach-exynos/pm_domains.c
> +++ b/arch/arm/mach-exynos/pm_domains.c
> @@ -125,7 +125,7 @@ static __init int exynos4_pm_init_power_domain(void)
>  			return -ENOMEM;
>  		}
>  
> -		pd->pd.name = kstrdup(np->name, GFP_KERNEL);
> +		pd->pd.name = kstrdup(dev_name(dev), GFP_KERNEL);
>  		pd->name = pd->pd.name;
>  		pd->base = of_iomap(np, 0);
>  		pd->pd.power_off = exynos_pd_power_off;
> 

Looks good to me. This patch is very useful for debug.

Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>

Thanks,
Chanwoo Choi
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