From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: Thu, 16 Feb 2023 18:38:55 +0000 (-0800)
Subject: arm/cpu: Add unreachable() to arch_cpu_idle_dead()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b40c7d6d31ac2f6b78371cdc08bc1b6b62f01375;p=linux.git

arm/cpu: Add unreachable() to arch_cpu_idle_dead()

arch_cpu_idle_dead() doesn't return.  Make that visible to the compiler
with an unreachable() code annotation.

Link: https://lkml.kernel.org/r/20230216183851.s5bnvniomq44rytu@treble
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 0b8c25763adc3..441ea5cff3901 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -382,6 +382,8 @@ void arch_cpu_idle_dead(void)
 		: "r" (task_stack_page(current) + THREAD_SIZE - 8),
 		  "r" (current)
 		: "r0");
+
+	unreachable();
 }
 #endif /* CONFIG_HOTPLUG_CPU */