linux-kernel - Re: [PATCH v5] PM: Support aborting sleep during filesystem sync

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Message-ID: <202510182014.I0BvTZvE-lkp@intel.com>
Date: Sat, 18 Oct 2025 21:19:20 +0800
From: kernel test robot <lkp@...el.com>
To: Samuel Wu <wusamuel@...gle.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Pavel Machek <pavel@...nel.org>, Len Brown <lenb@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Danilo Krummrich <dakr@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, tuhaowen@...ontech.com,
	Samuel Wu <wusamuel@...gle.com>,
	Saravana Kannan <saravanak@...gle.com>, kernel-team@...roid.com,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] PM: Support aborting sleep during filesystem sync

Hi Samuel,

kernel test robot noticed the following build errors:

[auto build test ERROR on rafael-pm/linux-next]
[also build test ERROR on rafael-pm/bleeding-edge amd-pstate/linux-next amd-pstate/bleeding-edge linus/master v6.18-rc1 next-20251017]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Samuel-Wu/PM-Support-aborting-sleep-during-filesystem-sync/20251018-091422
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link:    https://lore.kernel.org/r/20251017233907.2305303-1-wusamuel%40google.com
patch subject: [PATCH v5] PM: Support aborting sleep during filesystem sync
config: x86_64-buildonly-randconfig-001-20251018 (https://download.01.org/0day-ci/archive/20251018/202510182014.I0BvTZvE-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251018/202510182014.I0BvTZvE-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510182014.I0BvTZvE-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from arch/x86/kernel/asm-offsets.c:14:
>> include/linux/suspend.h:510:15: error: return type defaults to 'int' [-Wimplicit-int]
     510 | static inline pm_stop_waiting_for_fs_sync(void) {}
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/suspend.h: In function 'pm_sleep_fs_sync':
>> include/linux/suspend.h:511:1: warning: no return statement in function returning non-void [-Wreturn-type]
     511 | static inline int pm_sleep_fs_sync(void) {}
         | ^~~~~~
   make[3]: *** [scripts/Makefile.build:182: arch/x86/kernel/asm-offsets.s] Error 1 shuffle=496665200
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1280: prepare0] Error 2 shuffle=496665200
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:248: __sub-make] Error 2 shuffle=496665200
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2 shuffle=496665200
   make: Target 'prepare' not remade because of errors.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for I2C_K1
   Depends on [n]: I2C [=y] && HAS_IOMEM [=y] && (ARCH_SPACEMIT || COMPILE_TEST [=y]) && OF [=n]
   Selected by [y]:
   - MFD_SPACEMIT_P1 [=y] && HAS_IOMEM [=y] && (ARCH_SPACEMIT || COMPILE_TEST [=y]) && I2C [=y]


vim +/int +510 include/linux/suspend.h

   508	
   509	static inline void ksys_sync_helper(void) {}
 > 510	static inline pm_stop_waiting_for_fs_sync(void) {}
 > 511	static inline int pm_sleep_fs_sync(void) {}
   512	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki