From 4b2edd38282a42742d8f2039767fa4f1919330f0 Mon Sep 17 00:00:00 2001 From: Jianmin Lv Date: Wed, 12 Oct 2022 16:36:08 +0800 Subject: [PATCH] LoongArch: Fix cpu name after CPU-hotplug Don't overwrite the SMBIOS-provided CPU name on coming back from CPU- hotplug (including S3/S4) if it is already initialized. Reviewed-by: WANG Xuerui Signed-off-by: Jianmin Lv Signed-off-by: Huacai Chen --- arch/loongarch/kernel/cpu-probe.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/loongarch/kernel/cpu-probe.c b/arch/loongarch/kernel/cpu-probe.c index 529ab8f44ec6..255a09876ef2 100644 --- a/arch/loongarch/kernel/cpu-probe.c +++ b/arch/loongarch/kernel/cpu-probe.c @@ -187,7 +187,9 @@ static inline void cpu_probe_loongson(struct cpuinfo_loongarch *c, unsigned int uint64_t *vendor = (void *)(&cpu_full_name[VENDOR_OFFSET]); uint64_t *cpuname = (void *)(&cpu_full_name[CPUNAME_OFFSET]); - __cpu_full_name[cpu] = cpu_full_name; + if (!__cpu_full_name[cpu]) + __cpu_full_name[cpu] = cpu_full_name; + *vendor = iocsr_read64(LOONGARCH_IOCSR_VENDOR); *cpuname = iocsr_read64(LOONGARCH_IOCSR_CPUNAME);