From: Song Shuai songshuaishuai@tinylab.org
[ Upstream commit 91afbaafd6b1f1846520efd2b158066a25a1a316 ]
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: c0317210012e ("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.or... Signed-off-by: Palmer Dabbelt palmer@rivosinc.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/riscv/kernel/hibernate.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/arch/riscv/kernel/hibernate.c b/arch/riscv/kernel/hibernate.c index 264b2dcdd67e3..671b686c01587 100644 --- a/arch/riscv/kernel/hibernate.c +++ b/arch/riscv/kernel/hibernate.c @@ -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)