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Subject[ammarfaizi2-block:next/linux-next/master 97/182] drivers/gpu/drm/dp/drm_dp.c:210:4: warning: no previous prototype for function 'drm_dp_get_adjust_request_post_cursor'
tree:   https://github.com/ammarfaizi2/linux-block next/linux-next/master
head: 196d330d7fb1e7cc0d85641c89ce4602cb36f12e
commit: b885fbed0eb9d79d96a1f8145dc430e14fb33808 [97/182] Merge branch 'for-linux-next' of git://anongit.freedesktop.org/drm-intel
config: i386-randconfig-a011-20220221 (https://download.01.org/0day-ci/archive/20220223/202202231250.VkvwGjL3-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
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
# https://github.com/ammarfaizi2/linux-block/commit/b885fbed0eb9d79d96a1f8145dc430e14fb33808
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block next/linux-next/master
git checkout b885fbed0eb9d79d96a1f8145dc430e14fb33808
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/dp/

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 >>):

>> drivers/gpu/drm/dp/drm_dp.c:210:4: warning: no previous prototype for function 'drm_dp_get_adjust_request_post_cursor' [-Wmissing-prototypes]
u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STATUS_SIZE],
^
drivers/gpu/drm/dp/drm_dp.c:210:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STATUS_SIZE],
^
static
1 warning generated.


vim +/drm_dp_get_adjust_request_post_cursor +210 drivers/gpu/drm/dp/drm_dp.c

0192c25c03cd2f drivers/gpu/drm/drm_dp_helper.c Jani Nikula 2022-02-03 209
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 @210 u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STATUS_SIZE],
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 211 unsigned int lane)
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 212 {
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 213 unsigned int offset = DP_ADJUST_REQUEST_POST_CURSOR2;
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 214 u8 value = dp_link_status(link_status, offset);
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 215
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 216 return (value >> (lane << 1)) & 0x3;
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 217 }
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 218 EXPORT_SYMBOL(drm_dp_get_adjust_request_post_cursor);
79465e0ffeb9e4 drivers/gpu/drm/drm_dp_helper.c Thierry Reding 2019-10-21 219

:::::: The code at line 210 was first introduced by commit
:::::: 79465e0ffeb9e4866939ea562bc55367be91e595 drm/dp: Add helper to get post-cursor adjustments

:::::: TO: Thierry Reding <treding@nvidia.com>
:::::: CC: Thierry Reding <treding@nvidia.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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