cpufreq: ppc-corenet-cpufreq: Fix __udivdi3 modpost error

bfa709bc823fc32ee8dd5220d1711b46078235d8 (cpufreq: powerpc: add cpufreq
transition latency for FSL e500mc SoCs) introduced a modpost error:

ERROR: "__udivdi3" [drivers/cpufreq/ppc-corenet-cpufreq.ko] undefined!
make[1]: *** [__modpost] Error 1

Fix this by avoiding 64 bit integer division.

gcc version 4.8.2

Fixes: bfa709bc823f (cpufreq: powerpc: add cpufreq transition latency for FSL e500mc SoCs)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c
index a1ca3dd..0af618a 100644 (file)
--- 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 transition_latency_hz;
 
        np = of_get_cpu_node(cpu, NULL);
        if (!np)
@@ -205,8 +206,10 @@ 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;
 
+       transition_latency_hz = 12ULL * NSEC_PER_SEC;
        policy->cpuinfo.transition_latency =
-                               (12ULL * NSEC_PER_SEC) / fsl_get_sys_freq();
+               do_div(transition_latency_hz, fsl_get_sys_freq());
+
        of_node_put(np);
 
        return 0;