Running from USB-C: Filesystem breaks when entering suspend

[jglathe]

When booting from the image and running the rootfs on an USB-C port, regardless if you're behind a (powered) hub or not: When the system goes into suspend, the root filesystem becomes unoperable (readonly).
Probable cause: Some lack in the power management. There are some messages in dmesg that say not everything is working:

[    2.049181] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with usb0-sbu-mux
[    2.056263] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with usb1-sbu-mux
[    2.230842] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with a600000.usb
[    2.248853] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with ae90000.displayport-controller
[    2.251678] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with ae98000.displayport-controller
[    2.944111] qcom_pmic_glink pmic-glink: Failed to create device link (0x180) with a800000.usb

usb0-sbu-mux and usb1-sbu-mux are USB-C, like a600000.usb and a800000.usb are. Funnily enough, USB2 (a400000.usb) which is 3x USB-A and the internal RTL8152 GbE-Port doesn't have this issue, and it works with suspend as expected.

[jglathe]

Seems to have been mitigated with 6.6-rc6. The tests with the stick on USB-C went well, suspend/resume was no issue.