cpufreq: cpufreq-cpu0: use the exact frequency for clk_set_rate()

clk_set_rate() isn't supposed to accept approximate frequencies, instead
a supported frequency should be obtained from clk_round_rate() and then
used to set the clock.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c
index a64eb8b..ad1fde2 100644 (file)
--- a/drivers/cpufreq/cpufreq-cpu0.c
+++ b/drivers/cpufreq/cpufreq-cpu0.c
@@ -45,7 +45,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy,
        struct cpufreq_freqs freqs;
        struct opp *opp;
        unsigned long volt = 0, volt_old = 0, tol = 0;
-       long freq_Hz;
+       long freq_Hz, freq_exact;
        unsigned int index;
        int ret;
 
@@ -60,6 +60,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy,
        freq_Hz = clk_round_rate(cpu_clk, freq_table[index].frequency * 1000);
        if (freq_Hz < 0)
                freq_Hz = freq_table[index].frequency * 1000;
+       freq_exact = freq_Hz;
        freqs.new = freq_Hz / 1000;
        freqs.old = clk_get_rate(cpu_clk) / 1000;
 
@@ -98,7 +99,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy,
                }
        }
 
-       ret = clk_set_rate(cpu_clk, freqs.new * 1000);
+       ret = clk_set_rate(cpu_clk, freq_exact);
        if (ret) {
                pr_err("failed to set clock rate: %d\n", ret);
                if (cpu_reg)