Hirsute no ethernet after update

MotoFckr9k · September 16, 2021

Armbianmonitor:

https://paste.ubuntu.com/p/9Yz8SJVrzS/

Hello,

I installed Armbian Hirsute xfce bleeding edge kernel 5.13.y on my RockPro64 4GB and updated it right after that. After restarting after the update, ethernet doesn't work anymore. (Wifi connecting icon is shown and no connection to ethernet) dsmesg says that the link is up.
armbianmonitor: https://paste.ubuntu.com/p/9Yz8SJVrzS/
apt/history.log: https://paste.ubuntu.com/p/GQbfZp3Xch/
For apt history only the last two operations seem relevant. I assume the previous ones are made by whoever/whatever created the image.

Werner · September 17, 2021

So eth got lost somewhere on move from 5.13.y to 5.14.y

Could be here: https://github.com/armbian/build/pull/3125

or upstream. Dont know

c0rnelius · September 17, 2021

I haven't noticed any eth related problems on 5.13.y and RK3399, but when moving to 5.14.y I also found that eth no longer worked. I corrected the issue by reverting the following commit: https://github.com/torvalds/linux/commit/2d26f6e39afb88d32b8f39e76a51b542c3c51674

I understand its not a true fix. This was tested on the NanoPC-T4.

--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c	2021-09-12 03:01:00.000000000 -0400
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c	2021-09-14 07:19:24.402736613 -0400
@@ -21,6 +21,7 @@
 #include <linux/delay.h>
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
+#include <linux/pm_runtime.h>

 #include "stmmac_platform.h"

@@ -1528,6 +1529,9 @@
 		return ret;
 	}

+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
+
 	if (bsp_priv->integrated_phy)
 		rk_gmac_integrated_phy_powerup(bsp_priv);

@@ -1536,9 +1540,14 @@

 static void rk_gmac_powerdown(struct rk_priv_data *gmac)
 {
+	struct device *dev = &gmac->pdev->dev;
+
 	if (gmac->integrated_phy)
 		rk_gmac_integrated_phy_powerdown(gmac);

+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
+
 	phy_power_on(gmac, false);
 	gmac_clk_enable(gmac, false);
 }