linux-kernel - Re: [PATCH V4 3/8] opp: Enhance debug messages in of_init_opp

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Date:	Thu, 29 May 2014 17:33:08 -0500
From:	Nishanth Menon <nm@...com>
To:	Viresh Kumar <viresh.kumar@...aro.org>, <rjw@...ysocki.net>
CC:	<linaro-kernel@...ts.linaro.org>, <linux-pm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <arvind.chauhan@....com>,
	<inderpal.s@...sung.com>, <chander.kashyap@...aro.org>,
	<pavel@....cz>, <len.brown@...el.com>, <sudeep.holla@....com>
Subject: Re: [PATCH V4 3/8] opp: Enhance debug messages in of_init_opp_table()

On 05/27/2014 06:50 AM, Viresh Kumar wrote:
> Enhance print messages for debugging purposes. Add a dev_err() whenever we fail
> to initialize OPP table due to some error in the table present in dts and add a
> dev_dbg() for success case.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  drivers/base/power/opp.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
> index 2b615b9..ed5d580 100644
> --- a/drivers/base/power/opp.c
> +++ b/drivers/base/power/opp.c
> @@ -628,8 +628,11 @@ int of_init_opp_table(struct device *dev)
>  	prop = of_find_property(dev->of_node, "operating-points", NULL);
>  	if (!prop)
>  		return -ENODEV;
> -	if (!prop->value)
> +	if (!prop->value) {
> +		dev_err(dev, "%s: failed to init OPP: prop->value is NULL\n",
> +			__func__);
>  		return -ENODATA;
> +	}
>  
>  	/*
>  	 * Each OPP is a set of tuples consisting of frequency and
> @@ -653,6 +656,8 @@ int of_init_opp_table(struct device *dev)
>  	}
>  
>  	of_node_put(dev->of_node);
> +
> +	dev_dbg(dev, "%s: successfully created OPP table\n", __func__);
>  	return 0;
>  }
>  EXPORT_SYMBOL_GPL(of_init_opp_table);
> 
With the same $subject comment as patch #1:
Acked-by: Nishanth Menon <nm@...com>

-- 
Regards,
Nishanth Menon
--
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