* [PATCH AUTOSEL 6.11 073/244] cpufreq: loongson3: Use raw_smp_processor_id() in do_service_request()
[not found] <20240925113641.1297102-1-sashal@kernel.org>
@ 2024-09-25 11:24 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2024-09-25 11:24 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Huacai Chen, Xi Ruoyao, Binbin Zhou, Viresh Kumar, Sasha Levin,
chenhuacai, rafael, loongarch, linux-pm
From: Huacai Chen <chenhuacai@loongson.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@xry111.site>
Tested-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.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
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