linux-kernel - [PATCH v2 07/28] drivers: Add generic helper to match by fwnode

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Date:   Fri, 14 Jun 2019 18:54:02 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, rafael@...nel.org,
        suzuki.poulose@....com, "David S. Miller" <davem@...emloft.net>,
        Doug Ledford <dledford@...hat.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Jason Gunthorpe <jgg@...pe.ca>, linux-usb@...r.kernel.org,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Joe Perches <joe@...ches.com>
Subject: [PATCH v2 07/28] drivers: Add generic helper to match by fwnode

Add a helper to match the firmware node handle of a device. This
will be used later for generic look up by fwnode helpers for bus/class/driver.

Cc: "David S. Miller" <davem@...emloft.net>
Cc: Doug Ledford <dledford@...hat.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc: Jason Gunthorpe <jgg@...pe.ca>
Cc: linux-usb@...r.kernel.org
Cc: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Ulf Hansson <ulf.hansson@...aro.org>
Cc: Joe Perches <joe@...ches.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 drivers/base/core.c    | 6 ++++++
 include/linux/device.h | 1 +
 2 files changed, 7 insertions(+)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 9211908..efcdb96 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -3334,3 +3334,9 @@ int device_match_of_node(struct device *dev, const void *np)
 	return dev->of_node == np;
 }
 EXPORT_SYMBOL_GPL(device_match_of_node);
+
+int device_match_fwnode(struct device *dev, const void *fwnode)
+{
+	return dev_fwnode(dev) == fwnode;
+}
+EXPORT_SYMBOL_GPL(device_match_fwnode);
diff --git a/include/linux/device.h b/include/linux/device.h
index 7093085..08aa087 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -164,6 +164,7 @@ struct device *subsys_dev_iter_next(struct subsys_dev_iter *iter);
 void subsys_dev_iter_exit(struct subsys_dev_iter *iter);
 
 int device_match_of_node(struct device *dev, const void *np);
+int device_match_fwnode(struct device *dev, const void *fwnode);
 
 int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data,
 		     int (*fn)(struct device *dev, void *data));
-- 
2.7.4