kernel: idle: fix build error on arm-clang

galak · galak · commit 96a90550c486 · 2023-05-02T15:01:24.000-05:00
When building sample.minimal.mt-no-preempt-no-timers.arm on arm-clang
we get a link error as z_pm_save_idle_exit expects sys_clock_idle_exit
to be defined.

However the sample sets CONFIG_SYS_CLOCK_EXISTS=n so
sys_clock_idle_exit() will not be defined by any driver.  So add proper
ifdef protection in z_pm_save_idle_exit to fix this.

Signed-off-by: Kumar Gala &lt;kumar.gala@intel.com&gt;
diff --git a/kernel/idle.c b/kernel/idle.c
@@ -27,7 +27,9 @@ void z_pm_save_idle_exit(void)
 	 */
 	pm_system_resume();
 #endif	/* CONFIG_PM */
+#ifdef CONFIG_SYS_CLOCK_EXISTS
 	sys_clock_idle_exit();
+#endif
 }
 
 void idle(void *unused1, void *unused2, void *unused3)

Original file line number	Diff line number	Diff line change
`@@ -27,7 +27,9 @@ void z_pm_save_idle_exit(void)`
`27`	`27`	`*/`
`28`	`28`	`pm_system_resume();`
`29`	`29`	`#endif /* CONFIG_PM */`
	`30`	`+#ifdef CONFIG_SYS_CLOCK_EXISTS`
`30`	`31`	`sys_clock_idle_exit();`
	`32`	`+#endif`
`31`	`33`	`}`
`32`	`34`
`33`	`35`	`void idle(void unused1, void unused2, void *unused3)`