linux-kernel - Re: [PATCH V4] PM / OPP: Pass opp_table to dev_pm_opp_put

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Date:   Wed, 30 Nov 2016 16:17:45 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Rafael Wysocki <rjw@...ysocki.net>, jy0922.shim@...sung.com,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...eaurora.org>
Cc:     linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        "# v4 . 4+" <stable@...r.kernel.org>
Subject: Re: [PATCH V4] PM / OPP: Pass opp_table to dev_pm_opp_put_regulator()

On 30-11-16, 09:29, Viresh Kumar wrote:
> +struct opp_table *dev_pm_opp_set_regulator(struct device *dev, const char *name)
>  {
>  	struct opp_table *opp_table;
>  	struct regulator *reg;
> -	int ret;
>  
>  	mutex_lock(&opp_table_lock);
>  
>  	opp_table = _add_opp_table(dev);
>  	if (!opp_table) {
> -		ret = -ENOMEM;
> +		opp_table = ERR_PTR(-ENOMEM);
>  		goto unlock;
>  	}
>  
>  	/* This should be called before OPPs are initialized */
>  	if (WARN_ON(!list_empty(&opp_table->opp_list))) {
> -		ret = -EBUSY;
> +		opp_table = ERR_PTR(-EBUSY);

The pointer opp_table shouldn't be overwritten here as it will be used
in the error path. Will resend the patch shortly.

-- 
viresh