linux-kernel - Re: [PATCH v4 2/2] usb: typec: tps6598x: Export some power supply properties

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Message-ID: <CAHp75VdwnGD+39AHusGvSKcnOZs7q_AfXniTBaA+J=yMqL4_nw@mail.gmail.com>
Date:   Tue, 1 Dec 2020 15:52:40 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Guido Günther <agx@...xcpu.org>
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        USB <linux-usb@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 2/2] usb: typec: tps6598x: Export some power supply properties

On Tue, Dec 1, 2020 at 2:59 PM Guido Günther <agx@...xcpu.org> wrote:
> This allows downstream supplies and userspace to detect
> whether external power is supplied.

...

> +static int devm_tps6598_psy_register(struct tps6598x *tps)
> +{
> +       struct power_supply_config psy_cfg = {};
> +       const char *port_dev_name = dev_name(tps->dev);

> +       size_t psy_name_len = strlen(tps6598x_psy_name_prefix) +
> +                                    strlen(port_dev_name) + 1;

I'm so sorry by not noticing this one...

> +       char *psy_name;
> +
> +       psy_cfg.drv_data = tps;
> +       psy_cfg.fwnode = dev_fwnode(tps->dev);
> +       psy_name = devm_kzalloc(tps->dev, psy_name_len, GFP_KERNEL);
> +       if (!psy_name)
> +               return -ENOMEM;
> +
> +       snprintf(psy_name, psy_name_len, "%s%s", tps6598x_psy_name_prefix,
> +                port_dev_name);

...followed by this.

Please, use devm_kasprintf() instead.

-- 
With Best Regards,
Andy Shevchenko