linux-kernel - Re: [PATCH] OPP: Use dev_err_probe() when failing to get icc

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Date:   Mon, 26 Jun 2023 12:10:56 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Andrew Halaney <ahalaney@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        sboyd@...nel.org, nm@...com, vireshk@...nel.org
Subject: Re: [PATCH] OPP: Use dev_err_probe() when failing to get icc_path

On 23-06-23, 10:53, Andrew Halaney wrote:
> This, in tandem with dynamic debug, can print useful information about
> -EPROBE_DEFFER like below, and keeps similar behavior for other errors:
> 
>     [   16.561072] cpu cpu0: error -EPROBE_DEFER: dev_pm_opp_of_find_icc_paths: Unable to get path0
>     [   16.575777] platform 18591000.cpufreq: deferred probe pending
> 
> Signed-off-by: Andrew Halaney <ahalaney@...hat.com>
> ---
>  drivers/opp/of.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/drivers/opp/of.c b/drivers/opp/of.c
> index e6d1155d0990..1f0923cc1cd9 100644
> --- a/drivers/opp/of.c
> +++ b/drivers/opp/of.c
> @@ -513,11 +513,7 @@ int dev_pm_opp_of_find_icc_paths(struct device *dev,
>  	for (i = 0; i < num_paths; i++) {
>  		paths[i] = of_icc_get_by_index(dev, i);
>  		if (IS_ERR(paths[i])) {
> -			ret = PTR_ERR(paths[i]);
> -			if (ret != -EPROBE_DEFER) {
> -				dev_err(dev, "%s: Unable to get path%d: %d\n",
> -					__func__, i, ret);
> -			}
> +			ret = dev_err_probe(dev, ret, "%s: Unable to get path%d\n", __func__, i);
>  			goto err;
>  		}
>  	}

Applied. Thanks.

-- 
viresh