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Date:   Thu, 18 Jun 2020 08:48:44 -0700
From:   Jakub Kicinski <>
To:     Ioana Ciornei <>
Subject: Re: [PATCH net-next 5/5] net: dsa: felix: use the Lynx PCS helpers

On Thu, 18 Jun 2020 15:08:37 +0300 Ioana Ciornei wrote:
> Use the helper functions introduced by the newly added
> Lynx PCS MDIO module.
> Instead of representing the PCS as a phy_device, a mdio_device structure
> will be passed to the Lynx module which is now actually implementing all
> the PCS configuration and status reporting.
> All code previously used for PCS momnitoring and runtime configuration
> is removed and replaced will calls to the Lynx PCS operations.
> Tested on the following SERDES protocols of LS1028A: 0x7777
> (2500Base-X), 0x85bb (QSGMII), 0x9999 (SGMII) and 0x13bb (USXGMII).
> Signed-off-by: Ioana Ciornei <>
> Reviewed-by: Vladimir Oltean <>
> Tested-by: Vladimir Oltean <>

Hm, this does not build with allmodconfig.

drivers/net/phy/mdio-lynx-pcs.o: In function `lynx_pcs_link_up':
mdio-lynx-pcs.c:(.text+0x115): undefined reference to `mdiobus_modify'
mdio-lynx-pcs.c:(.text+0x1a3): undefined reference to `mdiobus_write'
drivers/net/phy/mdio-lynx-pcs.o: In function `lynx_pcs_config':
mdio-lynx-pcs.c:(.text+0x33a): undefined reference to `mdiobus_write'
mdio-lynx-pcs.c:(.text+0x371): undefined reference to `mdiobus_modify'
mdio-lynx-pcs.c:(.text+0x384): undefined reference to `phylink_mii_c22_pcs_config'
mdio-lynx-pcs.c:(.text+0x3e4): undefined reference to `mdiobus_write'
mdio-lynx-pcs.c:(.text+0x40d): undefined reference to `mdiobus_write'
mdio-lynx-pcs.c:(.text+0x422): undefined reference to `mdiobus_write'
drivers/net/phy/mdio-lynx-pcs.o: In function `lynx_pcs_get_state_usxgmii.isra.0':
mdio-lynx-pcs.c:(.text+0x457): undefined reference to `mdiobus_read'
mdio-lynx-pcs.c:(.text+0x4f1): undefined reference to `mdiobus_read'
drivers/net/phy/mdio-lynx-pcs.o: In function `lynx_pcs_get_state':
mdio-lynx-pcs.c:(.text+0x650): undefined reference to `phylink_mii_c22_pcs_get_state'
mdio-lynx-pcs.c:(.text+0x6fb): undefined reference to `phy_duplex_to_str'
mdio-lynx-pcs.c:(.text+0x711): undefined reference to `phy_speed_to_str'
mdio-lynx-pcs.c:(.text+0x7c0): undefined reference to `mdiobus_read'
mdio-lynx-pcs.c:(.text+0x7d4): undefined reference to `mdiobus_read'
drivers/net/phy/mdio-lynx-pcs.o: In function `lynx_pcs_an_restart':
mdio-lynx-pcs.c:(.text+0x954): undefined reference to `mdiobus_write'
mdio-lynx-pcs.c:(.text+0x978): undefined reference to `phylink_mii_c22_pcs_an_restart'
make[1]: *** [vmlinux] Error 1
make: *** [__sub-make] Error 2

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