The following build warnings / errors are noticed with arm64 defconfig+ with gcc-12 and gcc-13 toolchains on the Linux next-20250910 tag.

Regression Analysis: - New regression? Yes - Reproducibility? yes

Build regression: next-20250910: arm64: "typec_switch_set" [drivers/extcon/extcon-ptn5150.ko] undefined! Build regression: next-20250910: arm64: "fwnode_typec_switch_get" [drivers/extcon/extcon-ptn5150.ko] undefined!

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

The suspected patch, (The git bisection is in progress) 0d6a9aca15c987b4774f7fdb34114ab0d483766a extcon: ptn5150: Add Type-C orientation switch support

## Build log ERROR: modpost: "typec_switch_set" [drivers/extcon/extcon-ptn5150.ko] undefined! ERROR: modpost: "fwnode_typec_switch_get" [drivers/extcon/extcon-ptn5150.ko] undefined!

## Source * Kernel version: 6.17.0-rc5 * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git * Git describe: 6.17.0-rc5-next-20250910 * Git commit: 5f540c4aade9f1d58fb7b9490b4b7d5214ec9746 * Architectures: arm64 * Toolchains: gcc-12 and gcc-13 * Kconfigs: defconfig+lkftconfigs

## Build * Build log: https://qa-reports.linaro.org/api/testruns/29839409/log_file/ * Build details: https://regressions.linaro.org/lkft/linux-next-master/next-20250910/build/gc... * Build plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/builds/32V3KFrDCJ... * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/32V3KFrDCJV0h7Mw72c5h... * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/32V3KFrDCJV0h7Mw72c5h...

-- Linaro LKFT