lib: os: poweroff: Disable ZLIs before poweroff

bjarki-andreasen · fabiobaltieri · commit 66dbe436bd4e · 2025-12-14T11:14:45.000Z
We currently only disable "normal" IRQs with irq_lock(). This is not
sufficient if ZLIs are enabled, as even though they are supposed to
be "above" the kernel, they must not interrupt the poweroff procedure.

Signed-off-by: Bjarki Arge Andreasen &lt;bjarki.andreasen@nordicsemi.no&gt;
diff --git a/lib/os/poweroff.c b/lib/os/poweroff.c
@@ -10,5 +10,9 @@ void sys_poweroff(void)
 {
 	(void)irq_lock();
 
+#if defined(CONFIG_ZERO_LATENCY_IRQS)
+	(void)arch_zli_lock();
+#endif /* CONFIG_ZERO_LATENCY_IRQS */
+
 	z_sys_poweroff();
 }

Original file line number	Diff line number	Diff line change
`@@ -10,5 +10,9 @@ void sys_poweroff(void)`
`10`	`10`	`{`
`11`	`11`	`(void)irq_lock();`
`12`	`12`
	`13`	`+#if defined(CONFIG_ZERO_LATENCY_IRQS)`
	`14`	`+ (void)arch_zli_lock();`
	`15`	`+#endif /* CONFIG_ZERO_LATENCY_IRQS */`
	`16`	`+`
`13`	`17`	`z_sys_poweroff();`
`14`	`18`	`}`