[PATCH] powernow-k7: fix latency calculation

fix ->cpuinfo.transition_latency for powernow-k7
Signed-off-by: Bruno Ducrot <ducrot@poupinou.org>
Signed-off-by: Dominik Brodowski <linux@brodo.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/kernel/cpu/cpufreq/powernow-k7.c

@@ -634,7 +634,7 @@ static int __init powernow_cpu_init (struct cpufreq_policy *policy)
 
 	policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
 
-	policy->cpuinfo.transition_latency = 20 * latency / fsb;
+	policy->cpuinfo.transition_latency = cpufreq_scale(2000000UL, fsb, latency);
 
 	policy->cur = powernow_get(0);