[kbuild-all] [linux-next:master 12245/12292] drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h:2655:26: error: variable 'temp' set but not used

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: aa14a3016182213f022068500486ef3bcacb9006 commit: 00c686d94e7544afffe9b42d21834977cbd14359 [12245/12292] Merge remote-tracking branch 'amdgpu/drm-next' config: arm-randconfig-r005-20210910 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 00c686d94e7544afffe9b42d21834977cbd14359 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/amd/amdgpu/../display/dmub/dmub_srv.h:67, from drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:34: drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending': 2655 | uint64_t temp; | ^~~~ cc1: all warnings being treated as errors -- In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:35: drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending': 2655 | uint64_t temp; | ^~~~ drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c: In function 'dce_aux_transfer_with_retries': drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:775:156: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 775 | "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER"); | ^ drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:783:155: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 783 | "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK"); | ^ cc1: all warnings being treated as errors -- In file included from drivers/gpu/drm/amd/amdgpu/../display/dmub/src/../dmub_srv.h:67, from drivers/gpu/drm/amd/amdgpu/../display/dmub/src/dmub_srv.c:26: drivers/gpu/drm/amd/amdgpu/../display/dmub/src/../inc/dmub_cmd.h: In function 'dmub_rb_flush_pending': 2655 | uint64_t temp; | ^~~~ cc1: all warnings being treated as errors -- In file included from drivers/gpu/drm/amd/amdgpu/../display/dmub/src/../dmub_srv.h:67, from drivers/gpu/drm/amd/amdgpu/../display/dmub/src/dmub_dcn31.c:26: drivers/gpu/drm/amd/amdgpu/../display/dmub/src/../inc/dmub_cmd.h: In function 'dmub_rb_flush_pending': 2655 | uint64_t temp; | ^~~~ In file included from drivers/gpu/drm/amd/amdgpu/../display/dmub/src/dmub_dcn31.c:30: At top level: drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:181:29: error: 'VCN_BASE' defined but not used [-Werror=unused-const-variable=] 181 | static const struct IP_BASE VCN_BASE = { { { { 0x00007800, 0x00007E00, 0x02403000, 0, 0, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:174:29: error: 'UMC_BASE' defined but not used [-Werror=unused-const-variable=] 174 | static const struct IP_BASE UMC_BASE = { { { { 0x00014000, 0x00054000, 0x02425800, 0x02425C00, 0, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:167:29: error: 'THM_BASE' defined but not used [-Werror=unused-const-variable=] 167 | static const struct IP_BASE THM_BASE = { { { { 0x00016600, 0x02400C00, 0, 0, 0, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:160:29: error: 'SMUIO_BASE' defined but not used [-Werror=unused-const-variable=] 160 | static const struct IP_BASE SMUIO_BASE = { { { { 0x00016800, 0x00016A00, 0x02401000, 0x00440000, 0, 0 } }, | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:153:29: error: 'SDMA0_BASE' defined but not used [-Werror=unused-const-variable=] 153 | static const struct IP_BASE SDMA0_BASE = { { { { 0x00001260, 0x0000A000, 0x02402C00, 0, 0, 0 } }, | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:146:29: error: 'PCIE_BASE' defined but not used [-Werror=unused-const-variable=] 146 | static const struct IP_BASE PCIE_BASE = { { { { 0x02411800, 0x04440000, 0, 0, 0, 0 } }, | ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:139:29: error: 'OSSSYS_BASE' defined but not used [-Werror=unused-const-variable=] 139 | static const struct IP_BASE OSSSYS_BASE = { { { { 0x000010A0, 0x0240A000, 0, 0, 0, 0 } }, | ^~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:132:29: error: 'NBIO_BASE' defined but not used [-Werror=unused-const-variable=] 132 | static const struct IP_BASE NBIO_BASE = { { { { 0x00000000, 0x00000014, 0x00000D20, 0x00010400, 0x0241B000, 0x04040000 } }, | ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:125:29: error: 'MP2_BASE' defined but not used [-Werror=unused-const-variable=] 125 | static const struct IP_BASE MP2_BASE = { { { { 0x00016000, 0x0243FC00, 0x00DC0000, 0x00E00000, 0x00E40000, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:118:29: error: 'MP1_BASE' defined but not used [-Werror=unused-const-variable=] 118 | static const struct IP_BASE MP1_BASE = { { { { 0x00016000, 0x0243FC00, 0x00DC0000, 0x00E00000, 0x00E40000, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:111:29: error: 'MP0_BASE' defined but not used [-Werror=unused-const-variable=] 111 | static const struct IP_BASE MP0_BASE = { { { { 0x00016000, 0x0243FC00, 0x00DC0000, 0x00E00000, 0x00E40000, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:104:29: error: 'MMHUB_BASE' defined but not used [-Werror=unused-const-variable=] 104 | static const struct IP_BASE MMHUB_BASE = { { { { 0x00013200, 0x0001A000, 0x02408800, 0, 0, 0 } }, | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:97:29: error: 'IOHC0_BASE' defined but not used [-Werror=unused-const-variable=] 97 | static const struct IP_BASE IOHC0_BASE = { { { { 0x00010000, 0x02406000, 0x04EC0000, 0, 0, 0 } }, | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:90:29: error: 'HDP_BASE' defined but not used [-Werror=unused-const-variable=] 90 | static const struct IP_BASE HDP_BASE = { { { { 0x00000F20, 0x0240A400, 0, 0, 0, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:83:29: error: 'GC_BASE' defined but not used [-Werror=unused-const-variable=] 83 | static const struct IP_BASE GC_BASE = { { { { 0x00001260, 0x0000A000, 0x02402C00, 0, 0, 0 } }, | ^~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:76:29: error: 'FUSE_BASE' defined but not used [-Werror=unused-const-variable=] 76 | static const struct IP_BASE FUSE_BASE = { { { { 0x00017400, 0x02401400, 0, 0, 0, 0 } }, | ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:69:29: error: 'FCH_BASE' defined but not used [-Werror=unused-const-variable=] 69 | static const struct IP_BASE FCH_BASE = { { { { 0x0240C000, 0x00B40000, 0x11000000, 0, 0, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:62:29: error: 'DF_BASE' defined but not used [-Werror=unused-const-variable=] 62 | static const struct IP_BASE DF_BASE = { { { { 0x00007000, 0x0240B800, 0x02447800, 0x00C00000, 0x03640000, 0 } }, | ^~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:55:29: error: 'DPCS_BASE' defined but not used [-Werror=unused-const-variable=] 55 | static const struct IP_BASE DPCS_BASE = { { { { 0x00000012, 0x000000C0, 0x000034C0, 0x00009000, 0x02403C00, 0 } }, | ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:48:29: error: 'DCN_BASE' defined but not used [-Werror=unused-const-variable=] 48 | static const struct IP_BASE DCN_BASE = { { { { 0x00000012, 0x000000C0, 0x000034C0, 0x00009000, 0x02403C00, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:41:29: error: 'DBGU_IO_BASE' defined but not used [-Werror=unused-const-variable=] 41 | static const struct IP_BASE DBGU_IO_BASE = { { { { 0x000001E0, 0x00000260, 0x00000280, 0x0240B400, 0x02413C00, 0x02416000 } }, | ^~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:34:29: error: 'CLK_BASE' defined but not used [-Werror=unused-const-variable=] 34 | static const struct IP_BASE CLK_BASE = { { { { 0x00016C00, 0x02401800, 0, 0, 0, 0 } }, | ^~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:27:29: error: 'ATHUB_BASE' defined but not used [-Werror=unused-const-variable=] 27 | static const struct IP_BASE ATHUB_BASE = { { { { 0x00000C00, 0x00013300, 0x02408C00, 0, 0, 0 } }, | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../include/yellow_carp_offset.h:20:29: error: 'ACP_BASE' defined but not used [-Werror=unused-const-variable=] 20 | static const struct IP_BASE ACP_BASE = { { { { 0x02403800, 0x00480000, 0, 0, 0, 0 } }, | ^~~~~~~~ cc1: all warnings being treated as errors vim +/temp +2655 drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h 84034ad4c0c0813c Anthony Koo 2020-05-15 2638 592a631883fdaa3e Anthony Koo 2021-03-08 2639 /** 592a631883fdaa3e Anthony Koo 2021-03-08 2640 * @brief Flushes commands in the ringbuffer to framebuffer memory. 592a631883fdaa3e Anthony Koo 2021-03-08 2641 * 592a631883fdaa3e Anthony Koo 2021-03-08 2642 * Avoids a race condition where DMCUB accesses memory while 592a631883fdaa3e Anthony Koo 2021-03-08 2643 * there are still writes in flight to framebuffer. 592a631883fdaa3e Anthony Koo 2021-03-08 2644 * 592a631883fdaa3e Anthony Koo 2021-03-08 2645 * @param rb DMUB ringbuffer 592a631883fdaa3e Anthony Koo 2021-03-08 2646 */ 84034ad4c0c0813c Anthony Koo 2020-05-15 2647 static inline void dmub_rb_flush_pending(const struct dmub_rb *rb) 84034ad4c0c0813c Anthony Koo 2020-05-15 2648 { 84034ad4c0c0813c Anthony Koo 2020-05-15 2649 uint32_t rptr = rb->rptr; 84034ad4c0c0813c Anthony Koo 2020-05-15 2650 uint32_t wptr = rb->wrpt; 84034ad4c0c0813c Anthony Koo 2020-05-15 2651 84034ad4c0c0813c Anthony Koo 2020-05-15 2652 while (rptr != wptr) { 3a9d5b0b5301fb99 Anthony Koo 2021-08-14 2653 uint64_t volatile *data = (uint64_t volatile *)rb->base_address + rptr / sizeof(uint64_t); 3a9d5b0b5301fb99 Anthony Koo 2021-08-14 2654 //uint64_t volatile *p = (uint64_t volatile *)data; 3a9d5b0b5301fb99 Anthony Koo 2021-08-14 @2655 uint64_t temp; 3a9d5b0b5301fb99 Anthony Koo 2021-08-14 2656 uint8_t i; 84034ad4c0c0813c Anthony Koo 2020-05-15 2657 3a9d5b0b5301fb99 Anthony Koo 2021-08-14 2658 for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++) 3a9d5b0b5301fb99 Anthony Koo 2021-08-14 2659 temp = *data++; 84034ad4c0c0813c Anthony Koo 2020-05-15 2660 84034ad4c0c0813c Anthony Koo 2020-05-15 2661 rptr += DMUB_RB_CMD_SIZE; 84034ad4c0c0813c Anthony Koo 2020-05-15 2662 if (rptr >= rb->capacity) 84034ad4c0c0813c Anthony Koo 2020-05-15 2663 rptr %= rb->capacity; 84034ad4c0c0813c Anthony Koo 2020-05-15 2664 } 84034ad4c0c0813c Anthony Koo 2020-05-15 2665 } 84034ad4c0c0813c Anthony Koo 2020-05-15 2666 :::::: The code at line 2655 was first introduced by commit :::::: 3a9d5b0b5301fb992554ee93ae34fe91771e6434 drm/amd/display: [FW Promotion] Release 0.0.80 :::::: TO: Anthony Koo <Anthony.Koo(a)amd.com&gt; :::::: CC: Alex Deucher <alexander.deucher(a)amd.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org