linux-kernel - Re: [PATCH v3 2/3] Input: add a driver for GPIO controllable vibrators

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Date:   Fri, 12 Apr 2019 10:43:52 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Luca Weiss <luca@...tu.xyz>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Pascal PAILLET-LME <p.paillet@...com>,
        Coly Li <colyli@...e.de>, Lee Jones <lee.jones@...aro.org>,
        Xiaotong Lu <xiaotong.lu@...eadtrum.com>,
        Brian Masney <masneyb@...tation.org>,
        Rob Herring <robh@...nel.org>,
        Baolin Wang <baolin.wang@...aro.org>,
        David Brown <david.brown@...aro.org>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@...r.kernel.org>,
        "open list:INPUT KEYBOARD, MOUSE, JOYSTICK , TOUCHSCREEN..." 
        <linux-input@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Luca Weiss <luca@...tu.xyz>
Subject: Re: [PATCH v3 2/3] Input: add a driver for GPIO controllable vibrators

Quoting Luca Weiss (2019-04-12 08:06:24)
> diff --git a/drivers/input/misc/gpio-vibra.c b/drivers/input/misc/gpio-vibra.c
> new file mode 100644
> index 000000000000..3fd2dfd4f670
> --- /dev/null
> +++ b/drivers/input/misc/gpio-vibra.c
> @@ -0,0 +1,209 @@
> +
> +static int gpio_vibrator_probe(struct platform_device *pdev)
> +{
[...]
> +       vibrator->input->id.bustype = BUS_HOST;
> +       vibrator->input->close = gpio_vibrator_close;
> +
> +       input_set_drvdata(vibrator->input, vibrator);
> +       input_set_capability(vibrator->input, EV_FF, FF_RUMBLE);
> +
> +       err = input_ff_create_memless(vibrator->input, NULL,
> +                                     gpio_vibrator_play_effect);
> +       if (err) {
> +               dev_err(&pdev->dev, "Couldn't create FF dev: %d", err);
> +               return err;
> +       }
> +
> +       err = input_register_device(vibrator->input);
> +       if (err) {
> +               dev_err(&pdev->dev, "Couldn't register input dev: %d", err);

All the printks in this file need a newline.

> +               return err;
> +       }
> +
> +       platform_set_drvdata(pdev, vibrator);
> +
> +       return 0;
> +}
> +
> +
> +#ifdef CONFIG_OF
> +static const struct of_device_id gpio_vibra_dt_match_table[] = {
> +       { .compatible = "gpio-vibrator" },
> +       {},

Nitpick: Drop the comma on the sentinel so nothing can go after it
without causing a compilation error.

> +};
> +MODULE_DEVICE_TABLE(of, gpio_vibra_dt_match_table);
> +#endif
> +