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

[kernel test robot]

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: x86_64-randconfig-r025-20201221 (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 x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# 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=x86_64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>

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/kbuil...@lists.01.org

[kernel test robot]

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

[Nick Desaulniers]

Fix already applied:
https://lore.kernel.org/lkml/160943653614.132002.124...@bootlin.com/

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--
Thanks,
~Nick Desaulniers