[PATCH net-next v3 05/11] net: phy: print an info if a broken C45 bus is found

[Michael Walle]

If there is an PHY which gets confused by C45 transactions on the MDIO
bus, print an info together with the PHY identifier of the offending
one.

Signed-off-by: Michael Walle <mwalle@xxxxxxxxxx>
---
v3:
 - make it a dev_dbg()
 - check is phydev is not null
---
 drivers/net/phy/mdio_bus.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 29ad9302fe11..bdc178671234 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -617,10 +617,10 @@ static int mdiobus_scan_bus_c45(struct mii_bus *bus)
  */
 void mdiobus_scan_for_broken_c45_access(struct mii_bus *bus)
 {
+	struct phy_device *phydev;
 	int i;
 
 	for (i = 0; i < PHY_MAX_ADDR; i++) {
-		struct phy_device *phydev;
 		u32 oui;
 
 		phydev = mdiobus_get_phy(bus, i);
@@ -633,6 +633,11 @@ void mdiobus_scan_for_broken_c45_access(struct mii_bus *bus)
 			break;
 		}
 	}
+
+	if (phydev && bus->prevent_c45_access)
+		dev_dbg(&bus->dev,
+			"Detected broken PHY (ID %08lx). Disabling C45 bus transactions.\n",
+			(unsigned long)phydev->phy_id);
 }
 EXPORT_SYMBOL_GPL(mdiobus_scan_for_broken_c45_access);
 

-- 
2.39.2