cpufreq: loongson2: fix regression related to clock management

Commit 42913c799 (MIPS: Loongson2: Use clk API instead of direct
dereferences) broke the cpufreq functionality on Loongson2 boards:
clk_set_rate() is called before the CPU frequency table is
initialized, and therefore will always fail.

Fix by moving the clk_set_rate() after the table initialization.
Tested on Lemote FuLoong mini-PC.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 3.9+ <stable@vger.kernel.org> # 3.9+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/loongson2_cpufreq.c b/drivers/cpufreq/loongson2_cpufreq.c
index bb838b98507747a02ade005d99074a4c2a1d95a8..9536852c504a559865bc023a2d75ebed22a0ffd9 100644 (file)
--- a/drivers/cpufreq/loongson2_cpufreq.c
+++ b/drivers/cpufreq/loongson2_cpufreq.c
@@ -118,11 +118,6 @@ static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
                clk_put(cpuclk);
                return -EINVAL;
        }
-       ret = clk_set_rate(cpuclk, rate);
-       if (ret) {
-               clk_put(cpuclk);
-               return ret;
-       }
 
        /* clock table init */
        for (i = 2;
@@ -130,6 +125,12 @@ static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
             i++)
                loongson2_clockmod_table[i].frequency = (rate * i) / 8;
 
+       ret = clk_set_rate(cpuclk, rate);
+       if (ret) {
+               clk_put(cpuclk);
+               return ret;
+       }
+
        policy->cur = loongson2_cpufreq_get(policy->cpu);
 
        cpufreq_frequency_table_get_attr(&loongson2_clockmod_table[0],