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| author | Song Shuai <songshuaishuai@tinylab.org> | 2023-06-09 10:50:48 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-06-23 20:06:22 +0300 |
| commit | 91afbaafd6b1f1846520efd2b158066a25a1a316 (patch) | |
| tree | d65db65971e7f103cb5fbe71638cc8e316579949 /arch/riscv | |
| parent | b5e13f3ace78a8159dbad92bb005090a431e36d7 (diff) | |
| download | linux-91afbaafd6b1f1846520efd2b158066a25a1a316.tar.xz | |
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: 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.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/kernel/hibernate.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/riscv/kernel/hibernate.c b/arch/riscv/kernel/hibernate.c index 264b2dcdd67e..671b686c0158 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) |