Hi Bhaumik, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20200519] [cannot apply to linus/master v5.7-rc6 v5.7-rc5 v5.7-rc4 v5.7-rc6] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Bhaumik-Bhatt/Bug-fixes-and-boot... base: fb57b1fabcb28f358901b2df90abd2b48abc1ca8 config: xtensa-randconfig-r036-20200520 (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/linux/dev_printk.h:14, from include/linux/device.h:15, from drivers/bus/mhi/core/main.c:7: include/linux/dma-mapping.h: In function 'dma_map_resource': arch/xtensa/include/asm/page.h:193:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 193 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ include/linux/dma-mapping.h:352:2: note: in expansion of macro 'if' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ arch/xtensa/include/asm/page.h:193:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 193 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ include/linux/dma-mapping.h:352:2: note: in expansion of macro 'if' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ arch/xtensa/include/asm/page.h:193:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 193 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' 69 | (cond) ? | ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' 56 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~~~~~~~~~~~ include/linux/dma-mapping.h:352:2: note: in expansion of macro 'if' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ drivers/bus/mhi/core/main.c: In function 'mhi_intvec_threaded_handler': drivers/bus/mhi/core/main.c:397:8: error: implicit declaration of function 'mhi_is_active' [-Werror=implicit-function-declaration] 397 | if (!mhi_is_active(mhi_cntrl)) { | ^~~~~~~~~~~~~ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ 397 | if (!mhi_is_active(mhi_cntrl)) { | ^~ cc1: some warnings being treated as errors vim +/if +397 drivers/bus/mhi/core/main.c 371 372 irqreturn_t mhi_intvec_threaded_handler(int irq_number, void *priv) 373 { 374 struct mhi_controller *mhi_cntrl = priv; 375 struct device *dev = &mhi_cntrl->mhi_dev->dev; 376 enum mhi_state state = MHI_STATE_MAX; 377 enum mhi_pm_state pm_state = 0; 378 enum mhi_ee_type ee = 0; 379 bool handle_rddm = false; 380 381 write_lock_irq(&mhi_cntrl->pm_lock); 382 if (!MHI_REG_ACCESS_VALID(mhi_cntrl->pm_state)) { 383 write_unlock_irq(&mhi_cntrl->pm_lock); 384 goto exit_intvec; 385 } 386 387 state = mhi_get_mhi_state(mhi_cntrl); 388 ee = mhi_cntrl->ee; 389 mhi_cntrl->ee = mhi_get_exec_env(mhi_cntrl); 390 dev_dbg(dev, "local ee:%s device ee:%s dev_state:%s\n", 391 TO_MHI_EXEC_STR(mhi_cntrl->ee), TO_MHI_EXEC_STR(ee), 392 TO_MHI_STATE_STR(state)); 393 394 /* If device supports RDDM don't bother processing SYS error */ 395 if (mhi_cntrl->rddm_image) { 396 /* host may be performing a device power down already */ 398 write_unlock_irq(&mhi_cntrl->pm_lock); 399 goto exit_intvec; 400 } 401 402 if (mhi_cntrl->ee == MHI_EE_RDDM && mhi_cntrl->ee != ee) { 403 /* prevent clients from queueing any more packets */ 404 pm_state = mhi_tryset_pm_state(mhi_cntrl, 405 MHI_PM_SYS_ERR_DETECT); 406 if (pm_state == MHI_PM_SYS_ERR_DETECT) 407 handle_rddm = true; 408 } 409 410 write_unlock_irq(&mhi_cntrl->pm_lock); 411 412 if (handle_rddm) { 413 dev_err(dev, "RDDM event occurred!\n"); 414 mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_EE_RDDM); 415 wake_up_all(&mhi_cntrl->state_event); 416 } 417 goto exit_intvec; 418 } 419 420 if (state == MHI_STATE_SYS_ERR) { 421 dev_dbg(dev, "System error detected\n"); 422 pm_state = mhi_tryset_pm_state(mhi_cntrl, 423 MHI_PM_SYS_ERR_DETECT); 424 } 425 426 write_unlock_irq(&mhi_cntrl->pm_lock); 427 428 if (pm_state == MHI_PM_SYS_ERR_DETECT) { 429 wake_up_all(&mhi_cntrl->state_event); 430 431 /* For fatal errors, we let controller decide next step */ 432 if (MHI_IN_PBL(ee)) 433 mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_FATAL_ERROR); 434 else 435 mhi_pm_sys_err_handler(mhi_cntrl); 436 } 437 438 exit_intvec: 439 440 return IRQ_HANDLED; 441 } 442 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org