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Date:   Tue, 13 Jun 2023 12:45:08 +0300
From:   Serge Semin <Sergey.Semin@baikalelectronics.ru>
To:     Andy Shevchenko <andriy.shevchenko@linux.intel.com>
CC:     Damien Le Moal <dlemoal@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        <linux-ide@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-acpi@vger.kernel.org>, Hans de Goede <hdegoede@redhat.com>,
        Jens Axboe <axboe@kernel.dk>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Len Brown <lenb@kernel.org>,
        Daniel Scally <djrscally@gmail.com>,
        Heikki Krogerus <heikki.krogerus@linux.intel.com>,
        Sakari Ailus <sakari.ailus@linux.intel.com>
Subject: Re: [PATCH v2 2/3] device property: Implement device_is_compatible()
Message-ID: <20230613094508.mnmktmmt4l657ymj@mobilestation>
References: <20230609154900.43024-1-andriy.shevchenko@linux.intel.com>
 <20230609154900.43024-3-andriy.shevchenko@linux.intel.com>
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On Fri, Jun 09, 2023 at 06:48:59PM +0300, Andy Shevchenko wrote:
> Some users want to use the struct device pointer to see if the
> device is compatible in terms of Open Firmware specifications,
> i.e. if it has a 'compatible' property and it matches to the
> given value. Provide inline helper for the users.

IMO much useful wrapper. Thanks for the patch.
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>

-Serge(y)

> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
>  include/linux/property.h | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/include/linux/property.h b/include/linux/property.h
> index 695053c60306..0222b77dd75c 100644
> --- a/include/linux/property.h
> +++ b/include/linux/property.h
> @@ -85,6 +85,18 @@ bool fwnode_device_is_compatible(const struct fwnode_handle *fwnode, const char
>  	return fwnode_property_match_string(fwnode, "compatible", compat) >= 0;
>  }
>  
> +/**
> + * device_is_compatible - match 'compatible' property of the device with a given string
> + * @dev: Pointer to the struct device
> + * @compat: The string to match 'compatible' property with
> + *
> + * Returns: true if matches, otherwise false.
> + */
> +static inline bool device_is_compatible(const struct device *dev, const char *compat)
> +{
> +	return fwnode_device_is_compatible(dev_fwnode(dev), compat);
> +}
> +
>  int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
>  				       const char *prop, const char *nargs_prop,
>  				       unsigned int nargs, unsigned int index,
> -- 
> 2.40.0.1.gaa8946217a0b
> 
>