On Wed, Mar 30, 2022 at 04:45:25PM +0800, kernel test robot wrote:
> Hi Shirish,
> 
> FYI, the error/warning still remains.
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   965181d7ef7e1a863477536dc328c23a7ebc8a1d
> commit: 30aa3d26edb0f3d7992757287eec0ca588a5c259 x86/MCE/AMD: Carve out the MC4_MISC thresholding quirk
> date:   3 years, 2 months ago
> config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20220330/202203301632.RmI9R5aU-lkp(a)intel.com/config)
> compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
> reproduce (this is a W=1 build):
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=30aa3d26edb0f3d7992757287eec0ca588a5c259
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 30aa3d26edb0f3d7992757287eec0ca588a5c259
>         # save the config file to linux build tree
>         mkdir build_dir
>         make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/cpu/mce/ drivers/gpu/drm/i915/
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All warnings (new ones prefixed by >>):
> 
> >> arch/x86/kernel/cpu/mce/amd.c:552:6: warning: no previous prototype for 'disable_err_thresholding' [-Wmissing-prototypes]
>      552 | void disable_err_thresholding(struct cpuinfo_x86 *c)
>          |      ^~~~~~~~~~~~~~~~~~~~~~~~

I can't trigger this with gcc-9 (Debian 9.3.0-22) 9.3.0 on that commit
with your .config.

Please drop this.

-- 
Regards/Gruss,
    Boris.

SUSE Software Solutions Germany GmbH, GF: Ivo Totev, HRB 36809, AG Nürnberg