Hi Fedor, On Sun, Jan 19, 2025 at 04:23:21PM +0300, Fedor Pchelkin wrote: > Christian A. Ehrhardt wrote: > > The (compile tested) diff below should fix it and I can turn this > > into a proper patch but I lost access to test hardware with UCSI, > > thus this would need a "Tested-by:" from someone else before it can > > be included. Maybe Saranya can do this? > > > > Best regards Christian > > > > > > commit b44ba223cd840e6dbab6c7f69da6203c7a8ba570 > > Author: Christian A. Ehrhardt <lk@xxxxxxx> > > Date: Mon Dec 16 21:52:46 2024 +0100 > > > > acpi: typec: ucsi: Introduce a ->poll_cci method > > WARNING: CPU: 0 PID: 8 at drivers/usb/typec/ucsi/ucsi.c:1377 ucsi_reset_ppm+0x1af/0x1c0 [typec_ucsi] > is triggered on my laptop on roughly every system boot. When it's not, > there is a > ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed > message observed in the log. > > I've tried the above patch "acpi: typec: ucsi: Introduce a ->poll_cci > method" but the issue is still triggered [1]. > > Is there any useful info/logs I can provide you for further > investigation of the warning in question? > > As the warning is quite reliably triggered on my system, I may help with > the testing of other patches. Hard to say what might be going on. Some obvious questions to narrow it down, though: - Is this something new and UCSI worked before or has UCSI been broken with older kernels as well (maybe with different or no error messages). - If you get the warning but not the "PPM init failed" message, does UCSI actually work? Try to plug something into the USB-C ports and watch out for additional error messages (possibly after a timeout). Do new files/devices show up in sysfs? - Printing the value of CCI at various stages of the init process might help us to understand what's going on. Best regards, Christian
