backport of 14831fad73f5 for 5.10 and 5.4

Dear stable kernel maintainers, Please consider applying the attached backport of 14831fad73f5 to linux-5.10.y and linux-5.4.y.

14831fad73f5 first landed in v5.16-rc1.

There was a minor conflict due to missing e35123d83ee3 ("arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y") which first landed in v5.11-rc1.

It fixes a minor warning observed during `make mrproper` for Android kernel builds.