From 4beb44a2d62dddfe450f310aa1a950901731cb3a Mon Sep 17 00:00:00 2001
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Date: Sun, 31 Aug 2025 18:34:33 +0100
Subject: net: phy: add phy_interface_weight()

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/E1uslwn-00000001SOx-0a7H@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 include/linux/phy.h | 5 +++++
 1 file changed, 5 insertions(+)

--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -187,6 +187,11 @@ static inline bool phy_interface_empty(c
 	return bitmap_empty(intf, PHY_INTERFACE_MODE_MAX);
 }
 
+static inline unsigned int phy_interface_weight(const unsigned long *intf)
+{
+	return bitmap_weight(intf, PHY_INTERFACE_MODE_MAX);
+}
+
 static inline void phy_interface_and(unsigned long *dst, const unsigned long *a,
 				     const unsigned long *b)
 {
