Hello Florian, On Wed, 29 Nov 2023 21:10:44 -0800 Florian Fainelli <f.fainelli@xxxxxxxxx> wrote: > Do you have a reboot log with "initcall_debug debug" set on the kernel > command line and if so, does it always point to the PCI bus shutting > down the device drivers, pcie ports and ultimately the root complex? > > We have seen something similar before with ath10k_pci and our > pcie-brcmstb driver which eventually was a result of having made > incorrect assumptions while implementing the platform_driver::shutdown > routine. There was a hard hang in ath10k_remove(), I do not recall the > details, but we were definitively doing something improper there. > > imx6_pcie_shutdown() seems to much simpler, but my first guess would be > there. I had attempted using initcall_debug but the hang was happening on a different line across tests, so it did not reliably point to a specific place. Perhaps the serial port just stopped working before being able to flush the last few lines. I will have the shutdown code, even though it did not seems to the problematic. Thank you for your hints. Best regards, Luca -- Luca Ceresoli, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
