netdev - [PATCH net-next v2 0/2] net: phy: fixed_phy: replace list of fixed PHYs with static array

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Message-ID: <110f676d-727c-4575-abe4-e383f98fc38f@gmail.com>
Date: Sun, 11 Jan 2026 13:40:30 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: Andrew Lunn <andrew@...n.ch>, Andrew Lunn <andrew+netdev@...n.ch>,
 Russell King - ARM Linux <linux@...linux.org.uk>,
 Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>,
 David Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next v2 0/2] net: phy: fixed_phy: replace list of fixed
 PHYs with static array

Due to max 32 PHY addresses being available per mii bus, using a list
can't support more fixed PHY's. And there's no known use case for as
much as 32 fixed PHY's on a system. 8 should be plenty of fixed PHY's,
so use an array of that size instead of a list. This allows to
significantly reduce the code size and complexity.
In addition replace heavy-weight IDA with a simple bitmap.

Heiner Kallweit (2):
  net: phy: fixed_phy: replace list of fixed PHYs with static array
  net: phy: fixed_phy: replace IDA with a bitmap

 drivers/net/phy/fixed_phy.c | 83 +++++++++++++------------------------
 1 file changed, 29 insertions(+), 54 deletions(-)

-- 
2.52.0