Photonicat 在 5.15.138 內核版本下，lsusb 無法識別 Quectel 5g 網卡

[shuenpin]

反馈bug/问题模板，提建议请删除

1.关于你要提交的问题

Q：是否搜索了issue (使用 "x" 选择)

• [x] 没有类似的issue

2. 详细叙述

使用雲編譯，在 5.15.136 的內核版本下面，lsusb 可以正確識別網卡 但是在 5.15.138 版本下面，無法識別網卡

(1) 具体问题

A：在 11/13 後， clone 出來的源碼編譯成功，卻無法識別 Quectel 5G 網卡。但是之前的版本識別正常

(2) 路由器型号和固件版本

A：Photonicat / 跟隨著 main tag

(3) 详细日志

A：可以從 https://github.com/shuenpin/OpenWrt/releases 抓最新的雲編譯版本，進行問題復現。

[shuenpin]

調查發現 5.15.138 的 usb option.c 並沒有 RM502Q 的 VID/PID

build_dir/target-aarch64_generic_musl/linux-rockchip_armv8/linux-5.15.138/drivers/usb/serial/option.c

嘗試 patch 看看

[coolsnowwolf]

lsusb 看看 id ？

[shuenpin]

5.15.136 內核的狀態

root@OpenWrt:~# lsusb
Bus 006 Device 002: ID 2c7c:0800 Quectel RM502Q-AE
Bus 007 Device 001: ID 1d6b:0002 Linux 5.15.136 vhci_hcd USB/IP Virtual Host Controller
Bus 004 Device 001: ID 1d6b:0003 Linux 5.15.136 xhci-hcd xHCI Host Controller
Bus 006 Device 001: ID 1d6b:0003 Linux 5.15.136 xhci-hcd xHCI Host Controller
Bus 008 Device 001: ID 1d6b:0003 Linux 5.15.136 vhci_hcd USB/IP Virtual Host Controller
Bus 001 Device 001: ID 1d6b:0002 Linux 5.15.136 ehci_hcd EHCI Host Controller
Bus 002 Device 002: ID 04ca:3a22
Bus 002 Device 001: ID 1d6b:0001 Linux 5.15.136 ohci_hcd Generic Platform OHCI controller
Bus 003 Device 001: ID 1d6b:0002 Linux 5.15.136 xhci-hcd xHCI Host Controller
Bus 005 Device 001: ID 1d6b:0002 Linux 5.15.136 xhci-hcd xHCI Host Controller

內核版本 5.15.136

root@OpenWrt:~# uname -an
Linux OpenWrt 5.15.136 #0 SMP PREEMPT Sat Nov 11 16:10:31 2023 aarch64 GNU/Linux

開機順利抓到裝置 ttyUSB

root@OpenWrt:~# dmesg|grep ttyUSB
[   25.838249] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB0
[   25.839873] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB1
[   25.841451] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB2
[   25.843124] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB3

[shuenpin]

升級到新的內核版本 5.15.138

oot@OpenWrt:~# lsusb
Bus 007 Device 001: ID 1d6b:0002 Linux 5.15.138 vhci_hcd USB/IP Virtual Host Controller
Bus 004 Device 001: ID 1d6b:0003 Linux 5.15.138 xhci-hcd xHCI Host Controller
Bus 006 Device 001: ID 1d6b:0003 Linux 5.15.138 xhci-hcd xHCI Host Controller
Bus 008 Device 001: ID 1d6b:0003 Linux 5.15.138 vhci_hcd USB/IP Virtual Host Controller
Bus 001 Device 001: ID 1d6b:0002 Linux 5.15.138 ehci_hcd EHCI Host Controller
Bus 002 Device 002: ID 04ca:3a22
Bus 002 Device 001: ID 1d6b:0001 Linux 5.15.138 ohci_hcd Generic Platform OHCI controller
Bus 003 Device 001: ID 1d6b:0002 Linux 5.15.138 xhci-hcd xHCI Host Controller
Bus 005 Device 001: ID 1d6b:0002 Linux 5.15.138 xhci-hcd xHCI Host Controller

root@OpenWrt:~# uname -an
Linux OpenWrt 5.15.138 #0 SMP PREEMPT Mon Nov 20 05:25:09 2023 aarch64 GNU/Linux
root@OpenWrt:~# dmesg | grep ttyUSB

[shuenpin]

@coolsnowwolf

測試結束

我在編譯的時候 checkout 11/12 的 source (git checkout 59e66205e)，結果一切正常。

這樣是否 5.15.138 的 commit 或是核心有不相容的地方呢？

[coolsnowwolf]

理论上现在的版本解决了

[shuenpin]

理论上现在的版本解决了

看來還是沒有找到裝置，以下是 lsusb 的資訊

root@OpenWrt:~# lsusb
Bus 007 Device 001: ID 1d6b:0002 Linux 5.15.143 vhci_hcd USB/IP Virtual Host Controller
Bus 002 Device 001: ID 1d6b:0001 Linux 5.15.143 ohci_hcd Generic Platform OHCI controller
Bus 004 Device 001: ID 1d6b:0003 Linux 5.15.143 xhci-hcd xHCI Host Controller
Bus 006 Device 001: ID 1d6b:0003 Linux 5.15.143 xhci-hcd xHCI Host Controller
Bus 008 Device 001: ID 1d6b:0003 Linux 5.15.143 vhci_hcd USB/IP Virtual Host Controller
Bus 001 Device 001: ID 1d6b:0002 Linux 5.15.143 ehci_hcd EHCI Host Controller
Bus 003 Device 001: ID 1d6b:0002 Linux 5.15.143 xhci-hcd xHCI Host Controller
Bus 005 Device 001: ID 1d6b:0002 Linux 5.15.143 xhci-hcd xHCI Host Controller