riscv: 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.

Fixes: c031721001 ("RISC-V: Add arch functions to support hibernation/suspend-to-disk")
Signed-off-by: Song Shuai <songshuaishuai@tinylab.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230609075049.2651723-4-songshuaishuai@tinylab.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

This commit is contained in:

Song Shuai

2023-06-09 15:50:48 +08:00

committed by

Palmer Dabbelt

parent b5e13f3ace

commit 91afbaafd6

No known key found for this signature in database

GPG Key ID: 2E1319F35FBB1889

1 changed files with 0 additions and 1 deletions

									
										1

arch/riscv/kernel/hibernate.c

										View File
									
				@ -80,7 +80,6 @@ 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)

riscv: hibernate: remove WARN_ON in save_processor_state

1 arch/riscv/kernel/hibernate.c Unescape Escape View File

1

arch/riscv/kernel/hibernate.c

View File