cpufreq: cppc: Fix invalid return value in .get() callback

[ Upstream commit 2b8e6b58889c672e1ae3601d9b2b070be4dc2fbc ]

Returning a negative error code in a function with an unsigned
return type is a pretty bad idea. It is probably worse when the
justification for the change is "our static analisys tool found it".

Fixes: cf7de25878a1 ("cppc_cpufreq: Fix possible null pointer dereference")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index 17cfa2b92eeec6c8b5004aac9db12f1b5f8a5fc7..c5a4aa0c2c9aecbead2b32e0e8c3efe4898a50f5 100644 (file)
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -620,7 +620,7 @@ static unsigned int cppc_cpufreq_get_rate(unsigned int cpu)
        int ret;
 
        if (!policy)
-               return -ENODEV;
+               return 0;
 
        cpu_data = policy->driver_data;