From: Song Shuai Date: Fri, 9 Jun 2023 07:50:47 +0000 (+0800) Subject: arm64: hibernate: remove WARN_ON in save_processor_state X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=615af0021a612ea66312a5deddd39cc0d8b70e78;p=linux.git arm64: hibernate: remove WARN_ON in save_processor_state 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 Acked-by: Will Deacon Link: https://lore.kernel.org/r/20230609075049.2651723-3-songshuaishuai@tinylab.org Signed-off-by: Catalin Marinas --- diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c index 788597a6b6a2f..02870beb271ed 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -99,7 +99,6 @@ int pfn_is_nosave(unsigned long pfn) void notrace save_processor_state(void) { - WARN_ON(num_online_cpus() != 1); } void notrace restore_processor_state(void)