ACPI: processor: idle: Fix function defined but not used warning

LiHuiSong1 · rafaeljw · commit 9d68320b2bca · 2025-09-05T21:57:55.000+02:00
If CONFIG_ACPI_PROCESSOR_IDLE=n, acpi_processor_register_idle_driver() and acpi_processor_unregister_idle_driver() are never used and the empty stubs of them are not needed. Moreover, they cause the compiler to complain [1], so remove them. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202508300519.tZQHY6HA-lkp@intel.com/ [1] Fixes: 7a8c994 ("ACPI: processor: idle: Optimize ACPI idle driver registration") Signed-off-by: Huisong Li <lihuisong@huawei.com> Link: https://patch.msgid.link/20250905081900.663869-2-lihuisong@huawei.com [ rjw: Changelog rewrite ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
@@ -445,12 +445,6 @@ static inline int acpi_processor_hotplug(struct acpi_processor *pr)
 {
 	return -ENODEV;
 }
-static inline void acpi_processor_register_idle_driver(void)
-{
-}
-static inline void acpi_processor_unregister_idle_driver(void)
-{
-}
 #endif /* CONFIG_ACPI_PROCESSOR_IDLE */
 
 /* in processor_thermal.c */

Original file line number	Diff line number	Diff line change
`@@ -445,12 +445,6 @@ static inline int acpi_processor_hotplug(struct acpi_processor *pr)`
`445`	`445`	`{`
`446`	`446`	`return -ENODEV;`
`447`	`447`	`}`
`448`		`-static inline void acpi_processor_register_idle_driver(void)`
`449`		`-{`
`450`		`-}`
`451`		`-static inline void acpi_processor_unregister_idle_driver(void)`
`452`		`-{`
`453`		`-}`
`454`	`448`	`#endif /* CONFIG_ACPI_PROCESSOR_IDLE */`
`455`	`449`
`456`	`450`	`/* in processor_thermal.c */`