On 12/19/24 14:59, Lucas De Marchi wrote:
Hi, In our CI for xe and i915 drivers we are noticing some issues with suspend/resume with these error messages from spd5118: <3> [120.648546] spd5118 3-0051: PM: dpm_run_callback(): spd5118_resume [spd5118] returns -110 <3> [120.648598] spd5118 3-0051: PM: failed to resume async: error -110 <3> [122.825989] spd5118 3-0053: PM: failed to resume async: error -110 Example: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/3885 (there are a few other issues in which this error shows up, but this is the the cleanest one that doesn't mix with other bugs) thanks Lucas De Marchi
The timeout is observed when the resume code tries to write data back to the spd5118 chip. It originates from the i2c controller driver, not from the spd5118 driver. I have no idea why the i2c controller would time out in this situation. Presumably it should have been brought out of suspend by the time devices connected to it are re-enabled, but I don't see any associated message in the log. I know that others have tested suspend/resume support with the driver and confirmed that it works. It might help to enable debugging of the i2c controller driver if that is possible. Other than that I have no idea what might cause this problem or how to track it down. Guenter
