cpufreq: CPPC: Avoid overflow when calculating desired_perf

[cascardo/linux.git] / drivers / cpufreq / cppc_cpufreq.c

diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index 6debc18..99db422 100644 (file)
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -84,7 +84,7 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
 
        cpu = all_cpu_data[policy->cpu];
 
-       cpu->perf_ctrls.desired_perf = target_freq * policy->max / cppc_dmi_max_khz;
+       cpu->perf_ctrls.desired_perf = (u64)target_freq * policy->max / cppc_dmi_max_khz;
        freqs.old = policy->cur;
        freqs.new = target_freq;