[PATCH] ppc32: add cputable entry for 440SP Rev. A

[linux-2.6] / drivers / cpufreq / cpufreq_ondemand.c

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 8bc38ab96400fbe4a248d0ae22c05787d471258c..c1fc9c62bb51d0c1d2620f522d7c6ebbb0f432bc 100644 (file)
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -51,7 +51,8 @@ static unsigned int                           def_sampling_rate;
 #define MIN_SAMPLING_RATE                      (def_sampling_rate / 2)
 #define MAX_SAMPLING_RATE                      (500 * def_sampling_rate)
 #define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER   (1000)
-#define DEF_SAMPLING_DOWN_FACTOR               (10)
+#define DEF_SAMPLING_DOWN_FACTOR               (1)
+#define MAX_SAMPLING_DOWN_FACTOR               (10)
 #define TRANSITION_LATENCY_LIMIT               (10 * 1000)
 
 static void do_dbs_timer(void *data);
@@ -129,6 +130,9 @@ static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused,
        if (ret != 1 )
                return -EINVAL;
 
+       if (input > MAX_SAMPLING_DOWN_FACTOR || input < 1)
+               return -EINVAL;
+
        down(&dbs_sem);
        dbs_tuners_ins.sampling_down_factor = input;
        up(&dbs_sem);