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

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Date:   Tue, 1 Dec 2020 14:56:20 +0100
From:   Guido Günther <agx@...xcpu.org>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
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

Hi Andy,
On Tue, Dec 01, 2020 at 03:52:40PM +0200, Andy Shevchenko wrote:
> 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.

Will do. I'll let the series sit for a couple of days before sending a
v5.
Cheers,
 -- Guido

> 
> -- 
> With Best Regards,
> Andy Shevchenko
>