* [pm:bleeding-edge 83/91] drivers/acpi/processor_idle.c:667:4: warning: 'return' with no value, in function returning non-void
@ 2020-07-30 3:39 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2020-07-30 3:39 UTC (permalink / raw)
To: Neal Liu
Cc: kbuild-all, linux-acpi, devel, linux-pm, Rafael J. Wysocki,
Sami Tolvanen
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git bleeding-edge
head: 5bff8c754ebfc08b9cead967f38ebc0152d2076f
commit: efe9711214e6138a5a2a46ca4068bfce50c03444 [83/91] cpuidle: change enter_s2idle() prototype
config: ia64-randconfig-r024-20200729 (attached as .config)
compiler: ia64-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
git checkout efe9711214e6138a5a2a46ca4068bfce50c03444
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/acpi/processor_idle.c: In function 'acpi_idle_enter':
drivers/acpi/processor_idle.c:649:25: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
649 | ACPI_FLUSH_CPU_CACHE();
| ^
drivers/acpi/processor_idle.c: In function 'acpi_idle_enter_s2idle':
>> drivers/acpi/processor_idle.c:667:4: warning: 'return' with no value, in function returning non-void [-Wreturn-type]
667 | return;
| ^~~~~~
drivers/acpi/processor_idle.c:658:12: note: declared here
658 | static int acpi_idle_enter_s2idle(struct cpuidle_device *dev,
| ^~~~~~~~~~~~~~~~~~~~~~
drivers/acpi/processor_idle.c:671:4: warning: 'return' with no value, in function returning non-void [-Wreturn-type]
671 | return;
| ^~~~~~
drivers/acpi/processor_idle.c:658:12: note: declared here
658 | static int acpi_idle_enter_s2idle(struct cpuidle_device *dev,
| ^~~~~~~~~~~~~~~~~~~~~~
drivers/acpi/processor_idle.c: At top level:
drivers/acpi/processor_idle.c:1085:12: warning: no previous prototype for 'acpi_processor_ffh_lpi_probe' [-Wmissing-prototypes]
1085 | int __weak acpi_processor_ffh_lpi_probe(unsigned int cpu)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/acpi/processor_idle.c:1090:12: warning: no previous prototype for 'acpi_processor_ffh_lpi_enter' [-Wmissing-prototypes]
1090 | int __weak acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/return +667 drivers/acpi/processor_idle.c
4f86d3a8e297205 Len Brown 2007-10-03 657
efe9711214e6138 Neal Liu 2020-07-27 658 static int acpi_idle_enter_s2idle(struct cpuidle_device *dev,
5f5081852038d9a Rafael J. Wysocki 2015-02-11 659 struct cpuidle_driver *drv, int index)
5f5081852038d9a Rafael J. Wysocki 2015-02-11 660 {
5f5081852038d9a Rafael J. Wysocki 2015-02-11 661 struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
5f5081852038d9a Rafael J. Wysocki 2015-02-11 662
5f5081852038d9a Rafael J. Wysocki 2015-02-11 663 if (cx->type == ACPI_STATE_C3) {
5f5081852038d9a Rafael J. Wysocki 2015-02-11 664 struct acpi_processor *pr = __this_cpu_read(processors);
5f5081852038d9a Rafael J. Wysocki 2015-02-11 665
5f5081852038d9a Rafael J. Wysocki 2015-02-11 666 if (unlikely(!pr))
5f5081852038d9a Rafael J. Wysocki 2015-02-11 @667 return;
5f5081852038d9a Rafael J. Wysocki 2015-02-11 668
5f5081852038d9a Rafael J. Wysocki 2015-02-11 669 if (pr->flags.bm_check) {
5f5081852038d9a Rafael J. Wysocki 2015-02-11 670 acpi_idle_enter_bm(pr, cx, false);
5f5081852038d9a Rafael J. Wysocki 2015-02-11 671 return;
5f5081852038d9a Rafael J. Wysocki 2015-02-11 672 } else {
5f5081852038d9a Rafael J. Wysocki 2015-02-11 673 ACPI_FLUSH_CPU_CACHE();
5f5081852038d9a Rafael J. Wysocki 2015-02-11 674 }
5f5081852038d9a Rafael J. Wysocki 2015-02-11 675 }
5f5081852038d9a Rafael J. Wysocki 2015-02-11 676 acpi_idle_do_entry(cx);
efe9711214e6138 Neal Liu 2020-07-27 677
efe9711214e6138 Neal Liu 2020-07-27 678 return 0;
5f5081852038d9a Rafael J. Wysocki 2015-02-11 679 }
5f5081852038d9a Rafael J. Wysocki 2015-02-11 680
:::::: The code at line 667 was first introduced by commit
:::::: 5f5081852038d9a7b309190730bfb724b413235e ACPI / idle: Implement ->enter_freeze callback routine
:::::: TO: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
:::::: CC: Rafael J. Wysocki <rjw@rjwysocki.net>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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