linux-kernel - [PATCH AUTOSEL 6.11 073/244] cpufreq: loongson3: Use raw_smp_processor_id() in do_service

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Message-ID: <20240925113641.1297102-73-sashal@kernel.org>
Date: Wed, 25 Sep 2024 07:24:54 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Huacai Chen <chenhuacai@...ngson.cn>,
	Xi Ruoyao <xry111@...111.site>,
	Binbin Zhou <zhoubinbin@...ngson.cn>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Sasha Levin <sashal@...nel.org>,
	chenhuacai@...nel.org,
	rafael@...nel.org,
	loongarch@...ts.linux.dev,
	linux-pm@...r.kernel.org
Subject: [PATCH AUTOSEL 6.11 073/244] cpufreq: loongson3: Use raw_smp_processor_id() in do_service_request()

From: Huacai Chen <chenhuacai@...ngson.cn>

[ Upstream commit 2b7ec33e534f7a10033a5cf07794acf48b182bbe ]

Use raw_smp_processor_id() instead of plain smp_processor_id() in
do_service_request(), otherwise we may get some errors with the driver
enabled:

 BUG: using smp_processor_id() in preemptible [00000000] code: (udev-worker)/208
 caller is loongson3_cpufreq_probe+0x5c/0x250 [loongson3_cpufreq]

Reported-by: Xi Ruoyao <xry111@...111.site>
Tested-by: Binbin Zhou <zhoubinbin@...ngson.cn>
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/cpufreq/loongson3_cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/loongson3_cpufreq.c b/drivers/cpufreq/loongson3_cpufreq.c
index 5f79b6de127c9..6b5e6798d9a28 100644
--- a/drivers/cpufreq/loongson3_cpufreq.c
+++ b/drivers/cpufreq/loongson3_cpufreq.c
@@ -176,7 +176,7 @@ static DEFINE_PER_CPU(struct loongson3_freq_data *, freq_data);
 static inline int do_service_request(u32 id, u32 info, u32 cmd, u32 val, u32 extra)
 {
 	int retries;
-	unsigned int cpu = smp_processor_id();
+	unsigned int cpu = raw_smp_processor_id();
 	unsigned int package = cpu_data[cpu].package;
 	union smc_message msg, last;
 
-- 
2.43.0