[patch 02/18] arm: Adjust system_state check

From: Thomas Gleixner
Date: Sun May 14 2017 - 14:41:35 EST


To enable smp_processor_id() and might_sleep() debug checks earlier, it's
required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING.

Adjust the system_state check in ipi_cpu_stop() to handle the extra states.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
---
arch/arm/kernel/smp.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -555,8 +555,7 @@ static DEFINE_RAW_SPINLOCK(stop_lock);
*/
static void ipi_cpu_stop(unsigned int cpu)
{
- if (system_state == SYSTEM_BOOTING ||
- system_state == SYSTEM_RUNNING) {
+ if (system_state <= SYSTEM_RUNNING) {
raw_spin_lock(&stop_lock);
pr_crit("CPU%u: stopping\n", cpu);
dump_stack();