[PATCH] arm64: dts: rockchip: Drop netdev triggers on NanoPi R5S

[Heiko Stuebner]

On Tue, 22 Jul 2025 14:35:33 +0200, Diederik de Haas wrote:
> Sometimes the netdev triggers causes tasks to get blocked for more then
> 120 seconds, which in turn makes the (WAN) network port on the NanoPi
> R5S fail to come up.
> This results in the following (partial) trace:
> 
>   INFO: task kworker/0:1:11 blocked for more than 120 seconds.
>         Not tainted 6.16-rc6+unreleased-arm64-cknow #1 Debian 6.16~rc6-1~exp1
>   "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>   task:kworker/0:1     state:D stack:0     pid:11    tgid:11    ppid:2      task_flags:0x4208060 flags:0x00000010
>   Workqueue: events_power_efficient reg_check_chans_work [cfg80211]
>   Call trace:
>    __switch_to+0xf8/0x168 (T)
>    __schedule+0x3f8/0xda8
>    schedule+0x3c/0x120
>    schedule_preempt_disabled+0x2c/0x58
>    __mutex_lock.constprop.0+0x4d0/0xab8
>    __mutex_lock_slowpath+0x1c/0x30
>    mutex_lock+0x50/0x68
>    rtnl_lock+0x20/0x38
>    reg_check_chans_work+0x40/0x478 [cfg80211]
>    process_one_work+0x178/0x3e0
>    worker_thread+0x260/0x390
>    kthread+0x150/0x250
>    ret_from_fork+0x10/0x20
>   INFO: task kworker/0:1:11 is blocked on a mutex likely owned by task dhcpcd:615.
>   task:dhcpcd          state:D stack:0     pid:615   tgid:615   ppid:614    task_flags:0x400140 flags:0x00000018
>   Call trace:
>    __switch_to+0xf8/0x168 (T)
>    __schedule+0x3f8/0xda8
>    schedule+0x3c/0x120
>    schedule_preempt_disabled+0x2c/0x58
>    rwsem_down_write_slowpath+0x1e4/0x750
>    down_write+0x98/0xb0
>    led_trigger_register+0x134/0x1c0
>    phy_led_triggers_register+0xf4/0x258 [libphy]
>    phy_attach_direct+0x30c/0x390 [libphy]
>    phylink_fwnode_phy_connect+0xb0/0x138 [phylink]
>    __stmmac_open+0xec/0x520 [stmmac]
>    stmmac_open+0x4c/0xe8 [stmmac]
>    __dev_open+0x130/0x2e0
>    __dev_change_flags+0x1c4/0x248
>    netif_change_flags+0x2c/0x80
>    dev_change_flags+0x88/0xc8
>    devinet_ioctl+0x35c/0x610
>    inet_ioctl+0x204/0x260
>    sock_do_ioctl+0x6c/0x140
>    sock_ioctl+0x2e4/0x388
>    __arm64_sys_ioctl+0xb4/0x120
>    invoke_syscall+0x6c/0x100
>    el0_svc_common.constprop.0+0x48/0xf0
>    do_el0_svc+0x24/0x38
>    el0_svc+0x3c/0x188
>    el0t_64_sync_handler+0x10c/0x140
>    el0t_64_sync+0x198/0x1a0
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: rockchip: Drop netdev triggers on NanoPi R5S
      commit: 60d89a256079895a154d0f714caee8c64de586f7

Best regards,
-- 
Heiko Stuebner <heiko at sntech.de>