On Mon, Feb 08, 2021 at 05:40:13PM +0000, Russell King - ARM Linux admin wrote:

On Mon, Feb 08, 2021 at 08:42:36PM +0530, Calvin Johnson wrote:

quoted

+int fwnode_mdiobus_register_phy(struct mii_bus *bus,
+				struct fwnode_handle *child, u32 addr)
+{
+	struct mii_timestamper *mii_ts;

If you initialise this to NULL...

quoted

+	struct phy_device *phy;
+	bool is_c45 = false;
+	u32 phy_id;
+	int rc;
+
+	if (is_of_node(child)) {
+		mii_ts = of_find_mii_timestamper(to_of_node(child));
+		if (IS_ERR(mii_ts))
+			return PTR_ERR(mii_ts);
+	}
+
+	rc = fwnode_property_match_string(child, "compatible", "ethernet-phy-ieee802.3-c45");
+	if (rc >= 0)
+		is_c45 = true;
+
+	if (is_c45 || fwnode_get_phy_id(child, &phy_id))
+		phy = get_phy_device(bus, addr, is_c45);
+	else
+		phy = phy_device_create(bus, addr, phy_id, 0, NULL);
+	if (IS_ERR(phy)) {
+		if (mii_ts && is_of_node(child))

Then you don't need is_of_node() here.

quoted

+		/* phy->mii_ts may already be defined by the PHY driver. A
+		 * mii_timestamper probed via the device tree will still have
+		 * precedence.
+		 */
+		if (mii_ts)
+			phy->mii_ts = mii_ts;

Should this be moved out of the if() case?

I'm thinking of the future where we may end up adding mii timestamper
support for ACPI.

Right. I'll take case of these in next version.

Thanks
Calvin