diff options
Diffstat (limited to 'drivers/cpufreq/ppc-corenet-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/ppc-corenet-cpufreq.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index b7e677be1df..3607070797a 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -138,6 +138,7 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy) struct cpufreq_frequency_table *table; struct cpu_data *data; unsigned int cpu = policy->cpu; + u64 u64temp; np = of_get_cpu_node(cpu, NULL); if (!np) @@ -205,8 +206,11 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy) for_each_cpu(i, per_cpu(cpu_mask, cpu)) per_cpu(cpu_data, i) = data; - policy->cpuinfo.transition_latency = - (12 * NSEC_PER_SEC) / fsl_get_sys_freq(); + /* Minimum transition latency is 12 platform clocks */ + u64temp = 12ULL * NSEC_PER_SEC; + do_div(u64temp, fsl_get_sys_freq()); + policy->cpuinfo.transition_latency = u64temp + 1; + of_node_put(np); return 0; |