linux-kernel - Re: [PATCH 1/6] PM / OPP: reuse of_parse

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Date:	Mon, 10 Aug 2015 23:02:29 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Rafael Wysocki <rjw@...ysocki.net>, nm@...com,
	linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
	khilman@...aro.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Len Brown <len.brown@...el.com>,
	open list <linux-kernel@...r.kernel.org>,
	Pavel Machek <pavel@....cz>
Subject: Re: [PATCH 1/6] PM / OPP: reuse of_parse_phandle()

On 08/10, Viresh Kumar wrote:
> We already have a better API to get the opp descriptor block's node from
> cpu-node. Lets reuse that instead of creating our own routines for the
> same stuff. That cleans the code a lot.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

Reviewed-by: Stephen Boyd <sboyd@...eaurora.org>

> diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
> index 204c6c945168..1daaa1a418a2 100644
> --- a/drivers/base/power/opp.c
> +++ b/drivers/base/power/opp.c
>  	/*
>  	 * TODO: Support for multiple OPP tables.
>  	 *
>  	 * There should be only ONE phandle present in "operating-points-v2"
>  	 * property.
>  	 */
> -	if (prop->length != sizeof(__be32)) {
> -		dev_err(dev, "%s: Invalid opp desc phandle\n", __func__);
> -		return ERR_PTR(-EINVAL);
> -	}

But we lost this check? Perhaps we can use
of_count_phandle_with_args() to make suer we only have one
phandle?

-- 
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a Linux Foundation Collaborative Project
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