linux-kernel - Re: [PATCH v2] reboot: Add timeout for device shutdown

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Date: Thu, 30 May 2024 11:02:59 +0800
From: kernel test robot <lkp@...el.com>
To: Soumya Khasnis <soumya.khasnis@...y.com>, gregkh@...uxfoundation.org,
	rafael@...nel.org, linux-kernel@...r.kernel.org,
	daniel.lezcano@...aro.org, festevam@...x.de, lee@...nel.org,
	benjamin.bara@...data.com, dmitry.osipenko@...labora.com,
	ldmldm05@...il.com, srinavasa.nagaraju@...y.com
Cc: oe-kbuild-all@...ts.linux.dev, Madhusudan.Bobbili@...y.com,
	shingo.takeuchi@...y.com, keita.aihara@...y.com,
	masaya.takahashi@...y.com
Subject: Re: [PATCH v2] reboot: Add timeout for device shutdown

Hi Soumya,

kernel test robot noticed the following build warnings:

[auto build test WARNING on driver-core/driver-core-testing]
[also build test WARNING on driver-core/driver-core-next driver-core/driver-core-linus linus/master v6.10-rc1 next-20240529]
[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/Soumya-Khasnis/reboot-Add-timeout-for-device-shutdown/20240529-190203
base:   driver-core/driver-core-testing
patch link:    https://lore.kernel.org/r/20240529110049.GA73111%40sony.com
patch subject: [PATCH v2] reboot: Add timeout for device shutdown
config: x86_64-randconfig-r132-20240530 (https://download.01.org/0day-ci/archive/20240530/202405301059.Zo7XvEFp-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240530/202405301059.Zo7XvEFp-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/202405301059.Zo7XvEFp-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> kernel/reboot.c:55:3: sparse: sparse: symbol 'devs_shutdown' was not declared. Should it be static?
   kernel/reboot.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h, ...):
   include/linux/page-flags.h:240:46: sparse: sparse: self-comparison always evaluates to false
   include/linux/page-flags.h:240:46: sparse: sparse: self-comparison always evaluates to false

vim +/devs_shutdown +55 kernel/reboot.c

    50	
    51	#ifdef CONFIG_DEVICE_SHUTDOWN_TIMEOUT
    52	struct device_shutdown_timeout {
    53		struct timer_list timer;
    54		struct task_struct *task;
  > 55	} devs_shutdown;
    56	#define SHUTDOWN_TIMEOUT CONFIG_DEVICE_SHUTDOWN_TIMEOUT_SEC
    57	#endif
    58	

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