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authorTiezhu Yang <yangtiezhu@loongson.cn>2020-11-25 18:11:30 +0800
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2020-11-27 10:38:12 +0100
commitcbab54d9c2b2a73abe541790df28add14b2385bd (patch)
tree8705297c5a3252dd37a0ae5ac267570b77f7665f /arch/mips/loongson64
parentf0e82242b16826077a2775eacfe201d803bb7a22 (diff)
MIPS: No need to check CPU 0 in {loongson3,bmips,octeon}_cpu_disable()
After commit 9cce844abf07 ("MIPS: CPU#0 is not hotpluggable"), c->hotpluggable is 0 for CPU 0 and it will not generate a control file in sysfs for this CPU: [root@linux loongson]# cat /sys/devices/system/cpu/cpu0/online cat: /sys/devices/system/cpu/cpu0/online: No such file or directory [root@linux loongson]# echo 0 > /sys/devices/system/cpu/cpu0/online bash: /sys/devices/system/cpu/cpu0/online: Permission denied So no need to check CPU 0 in {loongson3,bmips,octeon}_cpu_disable(), just remove them. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/loongson64')
-rw-r--r--arch/mips/loongson64/smp.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/mips/loongson64/smp.c b/arch/mips/loongson64/smp.c
index aa0cd723e61d..b8c1fc3158fd 100644
--- a/arch/mips/loongson64/smp.c
+++ b/arch/mips/loongson64/smp.c
@@ -544,9 +544,6 @@ static int loongson3_cpu_disable(void)
unsigned long flags;
unsigned int cpu = smp_processor_id();
- if (cpu == 0)
- return -EBUSY;
-
set_cpu_online(cpu, false);
calculate_cpu_foreign_map();
local_irq_save(flags);