Re: drivers/i3c/master/mipi-i3c-hci/core.c:780:21: warning: attribute declaration must precede definition

From: Nick Desaulniers
Date: Tue Jan 05 2021 - 14:39:00 EST


Fix already applied:
https://lore.kernel.org/lkml/160943653614.132002.12499200411415721355.b4-ty@xxxxxxxxxxx/

On Sat, Dec 26, 2020 at 5:29 PM kernel test robot <lkp@xxxxxxxxx> wrote:
>
> Hi Nicolas,
>
> FYI, the error/warning still remains.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: f838f8d2b694cf9d524dc4423e9dd2db13892f3f
> commit: 95393f3e07ab53855b91881692a4a5b52dcdc03c i3c/master/mipi-i3c-hci: quiet maybe-unused variable warning
> date: 10 days ago
> config: arm-randconfig-r011-20201220 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45)
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install arm cross compiling tool for clang build
> # apt-get install binutils-arm-linux-gnueabi
> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=95393f3e07ab53855b91881692a4a5b52dcdc03c
> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> git fetch --no-tags linus master
> git checkout 95393f3e07ab53855b91881692a4a5b52dcdc03c
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> All warnings (new ones prefixed by >>):
>
> >> drivers/i3c/master/mipi-i3c-hci/core.c:780:21: warning: attribute declaration must precede definition [-Wignored-attributes]
> static const struct __maybe_unused of_device_id i3c_hci_of_match[] = {
> ^
> include/linux/compiler_attributes.h:267:56: note: expanded from macro '__maybe_unused'
> #define __maybe_unused __attribute__((__unused__))
> ^
> include/linux/mod_devicetable.h:262:8: note: previous definition is here
> struct of_device_id {
> ^
> drivers/i3c/master/mipi-i3c-hci/core.c:780:49: warning: unused variable 'i3c_hci_of_match' [-Wunused-const-variable]
> static const struct __maybe_unused of_device_id i3c_hci_of_match[] = {
> ^
> 2 warnings generated.
>
>
> vim +780 drivers/i3c/master/mipi-i3c-hci/core.c
>
> 779
> > 780 static const struct __maybe_unused of_device_id i3c_hci_of_match[] = {
> 781 { .compatible = "mipi-i3c-hci", },
> 782 {},
> 783 };
> 784 MODULE_DEVICE_TABLE(of, i3c_hci_of_match);
> 785
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
>
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--
Thanks,
~Nick Desaulniers