Hello,
We have identified a regression in the acpi-fan driver probe between
v6.9-rc7 and v6.10-rc1 on some Intel Chromebooks in the Collabora LAVA
lab.
For the Acer Chromebook Spin 514 (CP514-2H), the following error is
reported in the logs:
[ 0.651202] acpi-fan INTC1044:00: probe with driver acpi-fan failed with error -22
Similar errors are reported on other devices with fans compatible with
the same driver.
On Acer Chromebox CXI4, ASUS Chromebook Flip C436FA and
HP Chromebook x360 14 G1:
[ 0.488001] acpi-fan INT3404:00: probe with driver acpi-fan failed with error -22
On ASUS Chromebook Vero 514 CBV514-1H:
[ 1.168905] acpi-fan INTC1048:00: probe with driver acpi-fan failed with error -22
The issue is still present on next-20240529.
I'm sending this report to track the regression while a fix is
identified. I'll investigate the issue/run a bisection and report back
with the results.
This regression was discovered during some preliminary tests with the
ACPI probe kselftest [1] in KernelCI. The config used was the upstream
x86_64 defconfig with a fragment applied on top [2].
Best,
Laura
[1] https://lore.kernel.org/all/20240308144933.337107-1-laura.nao@xxxxxxxxxxxxx/
[2] https://pastebin.com/raw/0tFM0Zyg
#regzbot introduced: v6.9-rc7..v6.10-rc1
