MIPS: loongson64: Drop call to irq_cpu_offline()

Also loongson64 calls irq_cpu_offline(), none of its interrupt
controllers implement the .irq_cpu_offline callback.

It is thus obvious that this call only serves the dubious purpose
of wasting precious CPU cycles by iterating over all interrupts.

Get rid of the call altogether.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/20211021170414.3341522-2-maz@kernel.org

diff --git a/arch/mips/loongson64/smp.c b/arch/mips/loongson64/smp.c
index 09ebe84a17fe4e1945e97b404ac1e0f41be89f39..660e1de4412a1df9f7be21a9f8f7f65301b949d0 100644 (file)
--- a/arch/mips/loongson64/smp.c
+++ b/arch/mips/loongson64/smp.c
@@ -550,7 +550,6 @@ static int loongson3_cpu_disable(void)
        set_cpu_online(cpu, false);
        calculate_cpu_foreign_map();
        local_irq_save(flags);
-       irq_cpu_offline();
        clear_c0_status(ST0_IM);
        local_irq_restore(flags);
        local_flush_tlb_all();