[SPARC64]: Dont transition in us2e drivers if divisor does not change.

diff --git a/arch/sparc64/kernel/us2e_cpufreq.c b/arch/sparc64/kernel/us2e_cpufreq.c
index c5b5b2576406e8500bfc6f06ca2cd88cd5dad2e8..f082ed67f8c1c81a1aae1a483b89ec9f7b91f68e 100644 (file)
--- a/arch/sparc64/kernel/us2e_cpufreq.c
+++ b/arch/sparc64/kernel/us2e_cpufreq.c
@@ -256,7 +256,8 @@ static void us2e_set_cpu_divider_index(unsigned int cpu, unsigned int index)
        freqs.cpu = cpu;
        cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
 
-       us2e_transition(estar, new_bits, clock_tick, old_divisor, divisor);
+       if (old_divisor != divisor)
+               us2e_transition(estar, new_bits, clock_tick, old_divisor, divisor);
 
        cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);