Arnd Bergmann c7166a529e avoid __memcat_p link failure
The kernel test robot reports a link error when the stm driver is a
loadable module on any v5.4 kernel:

> ERROR: "__memcat_p" [drivers/hwtracing/stm/stm_core.ko] undefined!

This was fixed in mainline with commit 7273ad2b08f8 ("kbuild: link
lib-y objects to vmlinux forcibly when CONFIG_MODULES=y"), which
is fairly intrusive.

Fix the v5.4 specific issue with a minimal subset of that patch,
linking only the failing object into the kernel. Kernels before v4.20
are not affected.

Reported-by: kernel test robot <lkp@intel.com>
Link: https://groups.google.com/g/clang-built-linux/c/H-PrABqYShg
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-07 10:51:37 +02:00
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