linux-kernel - [PATCH v1 1/1] usb: phy: isp1301: Deduplicate of_find_i2c_device_by

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Date:   Fri, 21 May 2021 17:52:43 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH v1 1/1] usb: phy: isp1301: Deduplicate of_find_i2c_device_by_node()

The driver is using open-coded variant of of_find_i2c_device_by_node().
Replace it by the actual call to the above mentioned API.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/usb/phy/phy-isp1301.c | 25 +++++++++----------------
 1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/drivers/usb/phy/phy-isp1301.c b/drivers/usb/phy/phy-isp1301.c
index 6cf6fbd39237..ad3d57f1c273 100644
--- a/drivers/usb/phy/phy-isp1301.c
+++ b/drivers/usb/phy/phy-isp1301.c
@@ -142,24 +142,17 @@ static struct i2c_driver isp1301_driver = {
 
 module_i2c_driver(isp1301_driver);
 
-static int match(struct device *dev, const void *data)
-{
-	const struct device_node *node = (const struct device_node *)data;
-	return (dev->of_node == node) &&
-		(dev->driver == &isp1301_driver.driver);
-}
-
 struct i2c_client *isp1301_get_client(struct device_node *node)
 {
-	if (node) { /* reference of ISP1301 I2C node via DT */
-		struct device *dev = bus_find_device(&i2c_bus_type, NULL,
-						     node, match);
-		if (!dev)
-			return NULL;
-		return to_i2c_client(dev);
-	} else { /* non-DT: only one ISP1301 chip supported */
-		return isp1301_i2c_client;
-	}
+	struct i2c_client *client;
+
+	/* reference of ISP1301 I2C node via DT */
+	client = of_find_i2c_device_by_node(node);
+	if (client)
+		return client;
+
+	/* non-DT: only one ISP1301 chip supported */
+	return isp1301_i2c_client;
 }
 EXPORT_SYMBOL_GPL(isp1301_get_client);
 
-- 
2.30.2