OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
  • Task Type Bug Report
  • Category Kernel
  • Assigned To No-one
  • Operating System All
  • Severity Medium
  • Priority Very Low
  • Reported Version Trunk
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by Dirk Chang - 29.08.2019

FS#2472 - netdev led trigger on wwan0 actived even the qmi has not been started

Supply the following if possible:
- Device problem occurs on Orange PI One based board
- Software versions of OpenWrt/LEDE release, packages, etc.
- Steps to reproduce


This happens with Quectel EC25 LTE modem (USB interface, 2c7c:0125). The board is based on Allwinner H3, using openwrt-19.07-snapshot (kernel 4.14.140).

Following is the configuration, that 4g_wan will not be enabled when booted. But the LED binded with wwan0 been actived even the 4g_wan does not be enabled.

config interface '4g_wan'
	option proto 'qmi'
	option device '/dev/cdc-wdm0'
	option auto '0'
config led 'led_modem'
	option name 'modem'
	option sysfs 'kooiot:green:modem'
	option trigger 'netdev'
	option mode 'link tx rx'
	option default '0'
	option dev 'wwan0'

Once we enabled the 4g_wan, and then disabled the 4g_wan, the LED will be turned off.

When system booted, ifconfig -a shows:

wwan0     Link encap:Ethernet  HWaddr AA:C8:51:F9:2A:67  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

when 4g_wan enabled and disabled, ifconfig -a shows:

wwan0     Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:636 (636.0 B)  TX bytes:1192 (1.1 KiB)


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