Hi Cristian, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: edd1ec2e3a9f5de7fb267a3af73e4f00e7e052b7 commit: d4ae39de300c808cf4ed38f56fc266ba3caf0507 [3959/4951] firmware: arm_scmi: Make SMC transport a standalone driver config: arm-randconfig-002-20240816 (https://download.01.org/0day-ci/archive/20240816/202408160737.MRlXwG46-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project f86594788ce93b696675c94f54016d27a6c21d18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240816/202408160737.MRlXwG46-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408160737.MRlXwG46-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/firmware/arm_scmi/transports/smc.c:235:3: error: write to reserved register 'R7' 235 | arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->cap_id, 0, | ^ include/linux/arm-smccc.h:570:4: note: expanded from macro 'arm_smccc_1_1_invoke' 570 | arm_smccc_1_1_smc(__VA_ARGS__); \ | ^ include/linux/arm-smccc.h:513:48: note: expanded from macro 'arm_smccc_1_1_smc' 513 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__) | ^ include/linux/arm-smccc.h:400:24: note: expanded from macro 'SMCCC_SMC_INST' 400 | #define SMCCC_SMC_INST __SMC(0) | ^ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32' 215 | __inst_thumb32(thumb_opcode) | ^ arch/arm/include/asm/opcodes.h:205:27: note: expanded from macro '__inst_thumb32' 205 | #define __inst_thumb32(x) ___inst_thumb32( \ | ^ arch/arm/include/asm/opcodes.h:230:2: note: expanded from macro '___inst_thumb32' 230 | ".short " __stringify(first) ", " __stringify(second) "\n\t" | ^ >> drivers/firmware/arm_scmi/transports/smc.c:235:3: error: write to reserved register 'R7' include/linux/arm-smccc.h:567:4: note: expanded from macro 'arm_smccc_1_1_invoke' 567 | arm_smccc_1_1_hvc(__VA_ARGS__); \ | ^ include/linux/arm-smccc.h:529:48: note: expanded from macro 'arm_smccc_1_1_hvc' 529 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__) | ^ include/linux/arm-smccc.h:401:24: note: expanded from macro 'SMCCC_HVC_INST' 401 | #define SMCCC_HVC_INST __HVC(0) | ^ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32' 215 | __inst_thumb32(thumb_opcode) | ^ arch/arm/include/asm/opcodes.h:205:27: note: expanded from macro '__inst_thumb32' 205 | #define __inst_thumb32(x) ___inst_thumb32( \ | ^ arch/arm/include/asm/opcodes.h:230:2: note: expanded from macro '___inst_thumb32' 230 | ".short " __stringify(first) ", " __stringify(second) "\n\t" | ^ >> drivers/firmware/arm_scmi/transports/smc.c:235:3: error: write to reserved register 'R7' include/linux/arm-smccc.h:573:4: note: expanded from macro 'arm_smccc_1_1_invoke' 573 | __fail_smccc_1_1(__VA_ARGS__); \ | ^ include/linux/arm-smccc.h:540:8: note: expanded from macro '__fail_smccc_1_1' 540 | asm ("" : \ | ^ drivers/firmware/arm_scmi/transports/smc.c:238:3: error: write to reserved register 'R7' 238 | arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->param_page, | ^ include/linux/arm-smccc.h:570:4: note: expanded from macro 'arm_smccc_1_1_invoke' 570 | arm_smccc_1_1_smc(__VA_ARGS__); \ | ^ include/linux/arm-smccc.h:513:48: note: expanded from macro 'arm_smccc_1_1_smc' 513 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__) | ^ include/linux/arm-smccc.h:400:24: note: expanded from macro 'SMCCC_SMC_INST' 400 | #define SMCCC_SMC_INST __SMC(0) | ^ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32' 215 | __inst_thumb32(thumb_opcode) | ^ arch/arm/include/asm/opcodes.h:205:27: note: expanded from macro '__inst_thumb32' 205 | #define __inst_thumb32(x) ___inst_thumb32( \ | ^ arch/arm/include/asm/opcodes.h:230:2: note: expanded from macro '___inst_thumb32' 230 | ".short " __stringify(first) ", " __stringify(second) "\n\t" | ^ drivers/firmware/arm_scmi/transports/smc.c:238:3: error: write to reserved register 'R7' include/linux/arm-smccc.h:567:4: note: expanded from macro 'arm_smccc_1_1_invoke' 567 | arm_smccc_1_1_hvc(__VA_ARGS__); \ | ^ include/linux/arm-smccc.h:529:48: note: expanded from macro 'arm_smccc_1_1_hvc' 529 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__) | ^ include/linux/arm-smccc.h:401:24: note: expanded from macro 'SMCCC_HVC_INST' 401 | #define SMCCC_HVC_INST __HVC(0) | ^ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32' 215 | __inst_thumb32(thumb_opcode) | ^ arch/arm/include/asm/opcodes.h:205:27: note: expanded from macro '__inst_thumb32' 205 | #define __inst_thumb32(x) ___inst_thumb32( \ | ^ arch/arm/include/asm/opcodes.h:230:2: note: expanded from macro '___inst_thumb32' 230 | ".short " __stringify(first) ", " __stringify(second) "\n\t" | ^ drivers/firmware/arm_scmi/transports/smc.c:238:3: error: write to reserved register 'R7' include/linux/arm-smccc.h:573:4: note: expanded from macro 'arm_smccc_1_1_invoke' 573 | __fail_smccc_1_1(__VA_ARGS__); \ | ^ include/linux/arm-smccc.h:540:8: note: expanded from macro '__fail_smccc_1_1' 540 | asm ("" : \ | ^ 6 errors generated. vim +/R7 +235 drivers/firmware/arm_scmi/transports/smc.c 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 219 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 220 static int smc_send_message(struct scmi_chan_info *cinfo, 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 221 struct scmi_xfer *xfer) 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 222 { 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 223 struct scmi_smc *scmi_info = cinfo->transport_info; 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 224 struct arm_smccc_res res; 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 225 f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 226 /* 0bfdca8a8661aa drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 227 * Channel will be released only once response has been f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 228 * surely fully retrieved, so after .mark_txdone() f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 229 */ 0bfdca8a8661aa drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 230 smc_channel_lock_acquire(scmi_info, xfer); 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 231 d4ae39de300c80 drivers/firmware/arm_scmi/transports/smc.c Cristian Marussi 2024-08-12 232 core->shmem->tx_prepare(scmi_info->shmem, xfer, cinfo); 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 233 da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 234 if (scmi_info->cap_id != ULONG_MAX) da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 @235 arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->cap_id, 0, da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 236 0, 0, 0, 0, 0, &res); da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 237 else 1f17395124a53a drivers/firmware/arm_scmi/smc.c Sudeep Holla 2023-10-09 238 arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->param_page, da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 239 scmi_info->param_offset, 0, 0, 0, 0, 0, da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 240 &res); dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 241 f7199cf489027a drivers/firmware/arm_scmi/smc.c Sudeep Holla 2020-04-17 242 /* Only SMCCC_RET_NOT_SUPPORTED is valid error code */ f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 243 if (res.a0) { 0bfdca8a8661aa drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 244 smc_channel_lock_release(scmi_info); f7199cf489027a drivers/firmware/arm_scmi/smc.c Sudeep Holla 2020-04-17 245 return -EOPNOTSUPP; f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 246 } f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 247 f7199cf489027a drivers/firmware/arm_scmi/smc.c Sudeep Holla 2020-04-17 248 return 0; 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 249 } 1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 250 :::::: The code at line 235 was first introduced by commit :::::: da405477e7670782241234ea6b4309f3224ecb63 firmware: arm_scmi: Add qcom smc/hvc transport support :::::: TO: Nikunj Kela <quic_nkela@xxxxxxxxxxx> :::::: CC: Sudeep Holla <sudeep.holla@xxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
