net: mdio: Provide an useful error when of_phy_connect fails

0001-net-mdio-Provide-an-useful-error-when-of_phy_connect.patch

From 32ab471ccc5d2219e7fb8dac05f807dd832ff47b Mon Sep 17 00:00:00 2001
From: Stefan Wahren <[email protected]>
Date: Mon, 21 Jun 2021 12:30:30 +0200
Subject: [PATCH] net: mdio: Provide an useful error when of_phy_connect fails

Signed-off-by: Stefan Wahren <[email protected]>
---
 drivers/net/mdio/of_mdio.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mdio/of_mdio.c b/drivers/net/mdio/of_mdio.c
index 094494a..07034b5 100644
--- a/drivers/net/mdio/of_mdio.c
+++ b/drivers/net/mdio/of_mdio.c
@@ -404,13 +404,19 @@ struct phy_device *of_phy_connect(struct net_device *dev,
 	struct phy_device *phy = of_phy_find_device(phy_np);
 	int ret;
 
-	if (!phy)
+	if (!phy) {
+		netdev_err(dev, "Unable to find PHY device\n");
 		return NULL;
+	}
 
 	phy->dev_flags |= flags;
 
 	ret = phy_connect_direct(dev, phy, hndlr, iface);
 
+	if (ret) {
+		netdev_err(dev, "Unable to connect to PHY device: %d\n", ret);
+	}
+
 	/* refcount is held by phy_connect_direct() on success */
 	put_device(&phy->mdio.dev);
 
-- 
2.7.4