On 06/11/2018 07:53 PM, kbuild test robot wrote:

Hi Tadeusz,
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

quoted

quoted

drivers/char//tpm/tpm-dev-common.c:223:1: warning: data definition has no type or storage class

    __exitcall(tpm_dev_common_exit);
    ^~~~~~~~~~

quoted

quoted

drivers/char//tpm/tpm-dev-common.c:223:1: error: type defaults to 'int' in declaration of '__exitcall' [-Werror=implicit-int]
drivers/char//tpm/tpm-dev-common.c:223:1: warning: parameter names (without types) in function declaration

   drivers/char//tpm/tpm-dev-common.c:215:20: warning: 'tpm_dev_common_exit' defined but not used [-Wunused-function]
    static void __exit tpm_dev_common_exit(void)
                       ^~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +223 drivers/char//tpm/tpm-dev-common.c

   222	
 > 223	__exitcall(tpm_dev_common_exit);

It is complaining about __exitcall here, because there is a module_exit() call
in drivers/char/tpm/tpm-interface.c already and the two files are build into the same object.
It is strange that the problem only manifests itself when cross compiling with ARCH=i386. Native 64bit build works fine.
I will simply call the tpm_dev_common_exit() from the tpm_exit() and re-spin a v3.
Thanks again for the report.
-- 
Tadeusz
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