linux-kernel - [PATCH v3 2/3] device property: Implement device_is

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Date:   Mon, 12 Jun 2023 19:10:10 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org
Cc:     Hans de Goede <hdegoede@...hat.com>, Jens Axboe <axboe@...nel.dk>,
        Damien Le Moal <dlemoal@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Subject: [PATCH v3 2/3] device property: Implement device_is_compatible()

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.

Reviewed-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.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 3df7e10156d8..0251138c7c88 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -90,6 +90,18 @@ 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