Messages in this thread | | | Date | Sat, 11 Dec 2021 13:34:48 +0800 | From | kernel test robot <> | Subject | drivers/gpu/drm/kmb/kmb_dsi.c:812:2: warning: unused function 'set_test_mode_src_osc_freq_target_low_bits' |
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Hi Geert,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6f513529296fd4f696afb4354c46508abe646541 commit: ade896460e4a62f5e4a892a98d254937f6f5b64c drm: DRM_KMB_DISPLAY should depend on ARCH_KEEMBAY date: 1 year, 1 month ago config: mips-randconfig-r026-20211211 (https://download.01.org/0day-ci/archive/20211211/202112111334.EmMJpBTI-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ade896460e4a62f5e4a892a98d254937f6f5b64c git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout ade896460e4a62f5e4a892a98d254937f6f5b64c # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/drm/kmb/ fs/ mm/ sound/soc/samsung/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/kmb/kmb_dsi.c:812:2: warning: unused function 'set_test_mode_src_osc_freq_target_low_bits' set_test_mode_src_osc_freq_target_low_bits(struct kmb_dsi ^ >> drivers/gpu/drm/kmb/kmb_dsi.c:824:2: warning: unused function 'set_test_mode_src_osc_freq_target_hi_bits' set_test_mode_src_osc_freq_target_hi_bits(struct kmb_dsi ^ fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 16, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif' clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 14.0.0 (git://gitmirror/llvm_project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) Target: mipsel-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-097a1cb1d5/bin clang-14: note: diagnostic msg: Makefile arch drivers fs include kernel mm nr_bisected scripts sound source usr
vim +/set_test_mode_src_osc_freq_target_low_bits +812 drivers/gpu/drm/kmb/kmb_dsi.c
98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 810 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 811 static inline void 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 @812 set_test_mode_src_osc_freq_target_low_bits(struct kmb_dsi *kmb_dsi, 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 813 u32 dphy_no, 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 814 u32 freq) 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 815 { 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 816 /* Typical rise/fall time=166, refer Table 1207 databook, 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 817 * sr_osc_freq_target[7:0] 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 818 */ 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 819 test_mode_send(kmb_dsi, dphy_no, TEST_CODE_SLEW_RATE_DDL_CYCLES, 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 820 (freq & 0x7f)); 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 821 } 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 822 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 823 static inline void 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 @824 set_test_mode_src_osc_freq_target_hi_bits(struct kmb_dsi *kmb_dsi, 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 825 u32 dphy_no, 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 826 u32 freq) 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 827 { 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 828 u32 data; 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 829 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 830 /* Flag this as high nibble */ 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 831 data = ((freq >> 6) & 0x1f) | (1 << 7); 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 832 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 833 /* Typical rise/fall time=166, refer Table 1207 databook, 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 834 * sr_osc_freq_target[11:7] 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 835 */ 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 836 test_mode_send(kmb_dsi, dphy_no, TEST_CODE_SLEW_RATE_DDL_CYCLES, data); 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 837 } 98521f4d4b4cb2 Anitha Chrisanthus 2020-11-04 838
:::::: The code at line 812 was first introduced by commit :::::: 98521f4d4b4cb265374a4b1e13b41287a1960243 drm/kmb: Mipi DSI part of the display driver
:::::: TO: Anitha Chrisanthus <anitha.chrisanthus@intel.com> :::::: CC: Sam Ravnborg <sam@ravnborg.org>
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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