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Date:   Thu, 25 Apr 2019 09:35:07 +0800
From:   Matt Ranostay <matt.ranostay@...sulko.com>
To:     Daniel Gomez <dagmcr@...il.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>, javier@...hile0.org
Subject: Re: [PATCH v2] iio: temperature: maxim_thermocouple: declare missing
 of table

On Wed, Apr 24, 2019 at 5:42 AM Daniel Gomez <dagmcr@...il.com> wrote:
>
> Add missing <of_device_id> table for SPI driver relying on SPI
> device match since compatible is in a DT binding or in a DTS.
>
> Before this patch:
> modinfo drivers/iio/temperature/maxim_thermocouple.ko | grep alias
> alias:          spi:max31855
> alias:          spi:max6675
>
> After this patch:
> modinfo drivers/iio/temperature/maxim_thermocouple.ko | grep alias
> alias:          spi:max31855
> alias:          spi:max6675
> alias:          of:N*T*Cmaxim,max31855C*
> alias:          of:N*T*Cmaxim,max31855
> alias:          of:N*T*Cmaxim,max6675C*
> alias:          of:N*T*Cmaxim,max6675

Heh oops I missed that somehow in initial development.

Acked-by: Matt Ranostay <matt.ranostay@...sulko.com>

>
> Reported-by: Javier Martinez Canillas <javier@...hile0.org>
> Signed-off-by: Daniel Gomez <dagmcr@...il.com>
> ---
>  drivers/iio/temperature/maxim_thermocouple.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c
> index c31b963..c613a64 100644
> --- a/drivers/iio/temperature/maxim_thermocouple.c
> +++ b/drivers/iio/temperature/maxim_thermocouple.c
> @@ -10,6 +10,8 @@
>  #include <linux/init.h>
>  #include <linux/mutex.h>
>  #include <linux/err.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
>  #include <linux/spi/spi.h>
>  #include <linux/iio/iio.h>
>  #include <linux/iio/trigger.h>
> @@ -262,9 +264,17 @@ static const struct spi_device_id maxim_thermocouple_id[] = {
>  };
>  MODULE_DEVICE_TABLE(spi, maxim_thermocouple_id);
>
> +static const struct of_device_id maxim_thermocouple_of_match[] = {
> +        { .compatible = "maxim,max6675" },
> +        { .compatible = "maxim,max31855" },
> +        { },
> +};
> +MODULE_DEVICE_TABLE(of, maxim_thermocouple_of_match);
> +
>  static struct spi_driver maxim_thermocouple_driver = {
>         .driver = {
>                 .name   = MAXIM_THERMOCOUPLE_DRV_NAME,
> +               .of_match_table = maxim_thermocouple_of_match,
>         },
>         .probe          = maxim_thermocouple_probe,
>         .remove         = maxim_thermocouple_remove,
> --
> 2.7.4
>

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