linux-kernel - Re: [PATCH 04/10] iio: adc: mcp3911: add support for interrupts

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Message-ID: <CAHp75VcMtz1ax3SEAwM8fCWqV-7ZZW6FWRB9v4W0k0Fi4CJ8-g@mail.gmail.com>
Date:   Thu, 23 Jun 2022 21:04:51 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Marcus Folkesson <marcus.folkesson@...il.com>
Cc:     Kent Gustavsson <kent@...oris.se>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 04/10] iio: adc: mcp3911: add support for interrupts

On Thu, Jun 23, 2022 at 7:40 PM Marcus Folkesson
<marcus.folkesson@...il.com> wrote:
>
> Make it possible to read values upon interrupts.
> Configure Data Ready Signal Output Pin to either HiZ or push-pull and
> use it as interrupt source.

...

>  }
>
> +

Unwanted blank line.

> +static int mcp3911_set_trigger_state(struct iio_trigger *trig, bool enable)
> +{

> +       bool dr_hiz;

As far as I can see you don't need this variable, just call if
(device_property_...(...)).

> +       dr_hiz = device_property_read_bool(&adc->spi->dev, "microchip,data-ready-hiz");
> +       if (dr_hiz)
> +               ret = mcp3911_update(adc, MCP3911_REG_STATUSCOM, MCP3911_STATUSCOM_DRHIZ,
> +                               0, 2);
> +       else
> +               ret = mcp3911_update(adc, MCP3911_REG_STATUSCOM, MCP3911_STATUSCOM_DRHIZ,
> +                               MCP3911_STATUSCOM_DRHIZ, 2);

> +

Unneeded blank line.

> +       if (ret < 0)
> +               goto clk_disable;


-- 
With Best Regards,
Andy Shevchenko