From: kernel test robot <lkp@intel.com>
To: Ashwin Gundarapu <linuxuser509@zohomail.in>
Cc: oe-kbuild-all@lists.linux.dev, 0day robot <lkp@intel.com>
Subject: drivers/acpi/processor_idle.c:699:39: warning: suggest braces around empty body in an 'if' statement
Date: Mon, 15 Jun 2026 01:04:56 +0200 [thread overview]
Message-ID: <202606150127.ut0iFPwm-lkp@intel.com> (raw)
tree: https://github.com/intel-lab-lkp/linux/commits/Ashwin-Gundarapu/x86-acpi-remove-unused-ACPI_FLUSH_CPU_CACHE-macro/20260614-224607
head: 651c474aa81fd5a23e9392b8bdb69a6b55412111
commit: 651c474aa81fd5a23e9392b8bdb69a6b55412111 x86/acpi: remove unused ACPI_FLUSH_CPU_CACHE macro
date: 8 hours ago
config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260615/202606150127.ut0iFPwm-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/20260615/202606150127.ut0iFPwm-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606150127.ut0iFPwm-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/acpi/processor_idle.c: In function 'acpi_idle_enter':
>> drivers/acpi/processor_idle.c:699:39: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
699 | ACPI_FLUSH_CPU_CACHE();
| ^
vim +/if +699 drivers/acpi/processor_idle.c
6491bc0c616969f Rafael J. Wysocki 2015-02-03 676
409dfdcaffb266a Guilherme G. Piccoli 2022-06-07 677 static int __cpuidle acpi_idle_enter(struct cpuidle_device *dev,
6491bc0c616969f Rafael J. Wysocki 2015-02-03 678 struct cpuidle_driver *drv, int index)
6491bc0c616969f Rafael J. Wysocki 2015-02-03 679 {
6491bc0c616969f Rafael J. Wysocki 2015-02-03 680 struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
6491bc0c616969f Rafael J. Wysocki 2015-02-03 681 struct acpi_processor *pr;
6491bc0c616969f Rafael J. Wysocki 2015-02-03 682
6491bc0c616969f Rafael J. Wysocki 2015-02-03 683 pr = __this_cpu_read(processors);
6491bc0c616969f Rafael J. Wysocki 2015-02-03 684 if (unlikely(!pr))
6491bc0c616969f Rafael J. Wysocki 2015-02-03 685 return -EINVAL;
6491bc0c616969f Rafael J. Wysocki 2015-02-03 686
6491bc0c616969f Rafael J. Wysocki 2015-02-03 687 if (cx->type != ACPI_STATE_C1) {
1fecfdbb7acc662 Peter Zijlstra 2020-09-15 688 if (cx->type == ACPI_STATE_C3 && pr->flags.bm_check)
1fecfdbb7acc662 Peter Zijlstra 2020-09-15 689 return acpi_idle_enter_bm(drv, pr, cx, index);
1fecfdbb7acc662 Peter Zijlstra 2020-09-15 690
1fecfdbb7acc662 Peter Zijlstra 2020-09-15 691 /* C2 to C1 demotion. */
5f5081852038d9a Rafael J. Wysocki 2015-02-11 692 if (acpi_idle_fallback_to_c1(pr) && num_online_cpus() > 1) {
dc2251bf98c66db Rafael J. Wysocki 2017-08-23 693 index = ACPI_IDLE_STATE_START;
6491bc0c616969f Rafael J. Wysocki 2015-02-03 694 cx = per_cpu(acpi_cstate[index], dev->cpu);
6491bc0c616969f Rafael J. Wysocki 2015-02-03 695 }
6491bc0c616969f Rafael J. Wysocki 2015-02-03 696 }
6491bc0c616969f Rafael J. Wysocki 2015-02-03 697
6491bc0c616969f Rafael J. Wysocki 2015-02-03 698 if (cx->type == ACPI_STATE_C3)
6491bc0c616969f Rafael J. Wysocki 2015-02-03 @699 ACPI_FLUSH_CPU_CACHE();
6491bc0c616969f Rafael J. Wysocki 2015-02-03 700
6491bc0c616969f Rafael J. Wysocki 2015-02-03 701 acpi_idle_do_entry(cx);
6491bc0c616969f Rafael J. Wysocki 2015-02-03 702
e978aa7d7d57d04 Deepthi Dharwar 2011-10-28 703 return index;
4f86d3a8e297205 Len Brown 2007-10-03 704 }
4f86d3a8e297205 Len Brown 2007-10-03 705
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-06-14 23:05 UTC|newest]
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