From: Marek Vasut Date: Tue, 6 Oct 2020 13:52:53 +0000 (+0200) Subject: net: fec: Fix PHY init after phy_reset_after_clk_enable() X-Git-Tag: v5.10-rc1~107^2~1^2~31 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0da1ccbbefb662915228bc17e1c7d4ad28b3ddab;p=thirdparty%2Fkernel%2Flinux.git net: fec: Fix PHY init after phy_reset_after_clk_enable() The phy_reset_after_clk_enable() does a PHY reset, which means the PHY loses its register settings. The fec_enet_mii_probe() starts the PHY and does the necessary calls to configure the PHY via PHY framework, and loads the correct register settings into the PHY. Therefore, fec_enet_mii_probe() should be called only after the PHY has been reset, not before as it is now. Fixes: 1b0a83ac04e3 ("net: fec: add phy_reset_after_clk_enable() support") Reviewed-by: Andrew Lunn Tested-by: Richard Leitner Signed-off-by: Marek Vasut Cc: Christoph Niedermaier Cc: David S. Miller Cc: NXP Linux Team Cc: Shawn Guo Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index fb37816a74db9..23abe7f6cad0e 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -2984,17 +2984,17 @@ fec_enet_open(struct net_device *ndev) /* Init MAC prior to mii bus probe */ fec_restart(ndev); - /* Probe and connect to PHY when open the interface */ - ret = fec_enet_mii_probe(ndev); - if (ret) - goto err_enet_mii_probe; - /* Call phy_reset_after_clk_enable() again if it failed during * phy_reset_after_clk_enable() before because the PHY wasn't probed. */ if (reset_again) phy_reset_after_clk_enable(ndev->phydev); + /* Probe and connect to PHY when open the interface */ + ret = fec_enet_mii_probe(ndev); + if (ret) + goto err_enet_mii_probe; + if (fep->quirks & FEC_QUIRK_ERR006687) imx6q_cpuidle_fec_irqs_used();