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From:   Jianmin Lv <lvjianmin@loongson.cn>
To:     Huacai Chen <chenhuacai@kernel.org>,
        WANG Xuerui <kernel@xen0n.name>
Cc:     linux-kernel@vger.kernel.org, loongarch@lists.linux.dev,
        WANG Xuerui <git@xen0n.name>
Subject: [PATCH V5] LoongArch: Fix cpu name after s3/s4
Date:   Thu, 29 Sep 2022 17:16:54 +0800
Message-Id: <20220929091655.9164-1-lvjianmin@loongson.cn>
MIME-Version: 1.0
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Precedence: bulk

Don't overwrite the CPU name on coming back from S3/S4 if
it is already initialized.

Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Reviewed-by: WANG Xuerui <git@xen0n.name>

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);
 
-- 
2.31.1