linux-kernel - Re: [PATCH v2 1/7] staging:iio:ad2s90: Add device tree support

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Date:   Mon, 19 Nov 2018 08:09:21 +0000
From:   "Ardelean, Alexandru" <alexandru.Ardelean@...log.com>
To:     "lars@...afoo.de" <lars@...afoo.de>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "knaack.h@....de" <knaack.h@....de>,
        "jic23@...nel.org" <jic23@...nel.org>,
        "Hennerich, Michael" <Michael.Hennerich@...log.com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "matheus.bernardino@....br" <matheus.bernardino@....br>,
        "pmeerw@...erw.net" <pmeerw@...erw.net>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
CC:     "victorcolombo@...il.com" <victorcolombo@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "kernel-usp@...glegroups.com" <kernel-usp@...glegroups.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 1/7] staging:iio:ad2s90: Add device tree support

On Sun, 2018-11-18 at 02:25 -0200, Matheus Tavares wrote:
> This patch adds device tree support to ad2s90 with standard
> device tree id table.
> 

Hey,

Comment inline

> Signed-off-by: Matheus Tavares <matheus.bernardino@....br>
> ---
> Changes in v2:
>  - none
> 
>  drivers/staging/iio/resolver/ad2s90.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/staging/iio/resolver/ad2s90.c
> b/drivers/staging/iio/resolver/ad2s90.c
> index 3e257ac46f7a..6ffbac66b837 100644
> --- a/drivers/staging/iio/resolver/ad2s90.c
> +++ b/drivers/staging/iio/resolver/ad2s90.c
> @@ -107,6 +107,12 @@ static int ad2s90_probe(struct spi_device *spi)
>  	return devm_iio_device_register(indio_dev->dev.parent, indio_dev);
>  }
>  
> +static const struct of_device_id ad2s90_of_match[] = {
> +	{ .compatible = "adi,ad2s90", },
> +	{}
> +};
> +MODULE_DEVICE_TABLE(of, ad2s90_of_match);
> +
>  static const struct spi_device_id ad2s90_id[] = {
>  	{ "ad2s90" },
>  	{}
> @@ -116,6 +122,7 @@ MODULE_DEVICE_TABLE(spi, ad2s90_id);
>  static struct spi_driver ad2s90_driver = {
>  	.driver = {
>  		.name = "ad2s90",
> +		.of_match_table = of_match_ptr(ad2s90_of_match),

I think you need to remove the of_match_ptr().
There was a comment from Jonathan on another thread about this.
See:
   https://patchwork.kernel.org/patch/10682963/

So, 
+		.of_match_table = of_match_ptr(ad2s90_of_match),

becomes
> +		.of_match_table = ad2s90_of_match,

>  	},
>  	.probe = ad2s90_probe,
>  	.id_table = ad2s90_id,