On 2/7/22 03:35, Heikki Krogerus wrote: > On Sun, Feb 06, 2022 at 05:28:48PM -0800, Randy Dunlap wrote: >> Hi, >> >> On my custom 5.16, 5.17-rc1, and 5.17-rc2 kernels I am seeing >> ucsi_acpi_platform_driver_init() take around 60 seconds. >> >> [ 2.733138] calling ucsi_acpi_platform_driver_init+0x0/0x1000 [ucsi_acpi] @ 470 >> [ 64.603126] initcall ucsi_acpi_platform_driver_init+0x0/0x1000 [ucsi_acpi] returned 0 after 58690601 usecs > > I don't have any ideas what could be causing it to take that long? > That driver does not really do anything else except it queues a work > that then actually initialises the UCSI interface. The probe() in that > driver (ucsi_acpi) does not stay and wait for the initialisation to > finish. > > Can you check are the USB Type-C devices appearing under > /sys/class/typec faster then that? One entry there: lrwxrwxrwx 1 root root 0 Feb 7 08:57 port0 -> ../../devices/platform/USBC000:00/typec/port0/ Do you want more than that? > Also, if the driver is a module, can you check does it always take > that long if you unload and the reload the module (ucsi_acpi.ko)? > >> Did I miss some other (needed) Kconfig option or is something missing in >> my system's ACPI tables e.g.? > > There shouldn't be any dependencies that are missing, but it would not > hurt to take a look at your acpi tables. Can you send acpidump? > > Though, I doubt there is anything missing from there either. > >> DMI: Dell Inc. Inspiron 15 5510/076F7Y, BIOS 2.4.1 11/05/2021 The (large) acpidump output is here: http://www.infradead.org/~rdunlap/doc/dell15-acpidump.out.gz thanks. -- ~Randy
