diff mbox series

[V2,1/4] ARM: hibernate: remove WARN_ON in save_processor_state

Message ID 20230609075049.2651723-2-songshuaishuai@tinylab.org
State New
Headers
Series Remove WARN_ON in save_processor_state |

Commit Message

Song Shuai June 9, 2023, 7:50 a.m. UTC 
  During hibernation or restoration, freeze_secondary_cpus
checks num_online_cpus via BUG_ON, and the subsequent
save_processor_state also does the checking with WARN_ON.

In the case of CONFIG_PM_SLEEP_SMP=n, freeze_secondary_cpus
is not defined, but the sole possible condition to disable
CONFIG_PM_SLEEP_SMP is !SMP where num_online_cpus is always 1.
We also don't have to check it in save_processor_state.

So remove the unnecessary checking in save_processor_state.

Signed-off-by: Song Shuai <songshuaishuai@tinylab.org>
---
 arch/arm/kernel/hibernate.c | 1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm/kernel/hibernate.c b/arch/arm/kernel/hibernate.c
index 2373020af965..84abccf3221a 100644
--- a/arch/arm/kernel/hibernate.c
+++ b/arch/arm/kernel/hibernate.c
@@ -33,7 +33,6 @@  int pfn_is_nosave(unsigned long pfn)
 
 void notrace save_processor_state(void)
 {
-	WARN_ON(num_online_cpus() != 1);
 	local_fiq_disable();
 }