linux kernel compilation: ERROR: "function" [path/to/module/module.ko] undefined -


i have similar problem this one, me it's error not warning. i'm building linux-4.8.5 patch applied 1 module. get:

error: "intel_soc_pmic_readb" [drivers/gpu/drm/i915/i915.ko] undefined! error: "intel_soc_pmic_writeb" [drivers/gpu/drm/i915/i915.ko] undefined! scripts/makefile.modpost:91: recipe target '__modpost' failed make[1]: *** [__modpost] error 1 makefile:1201: recipe target 'modules' failed make: *** [modules] error 2

in other question kbuild_extra_symbols , documentation supposed in documentation/kbuild/modules.txt. reading file, seems apply modules not included in linux itself?

the functions defined like

int function(){     do_stuff; } export_symbol(function);

then there declaration

 int function();

in .h file in include folder , it's called like

 #include <the_aforementioned_file.h> //stuff function();

from file in same folder definition of function. there no other occurrences of function name in whole source tree.

and don't see mistake. i'm not looking in right place, guess.


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