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Code Issues Releases Wiki Activity

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>
This commit is contained in:
Guennadi Liakhovetski 2013-02-25 18:22:37 +01:00 committed by Rafael J. Wysocki
parent 2f7021a815
commit 0ca6843655
1 changed files with 3 additions and 2 deletions
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5
drivers/cpufreq/cpufreq-cpu0.c
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@ -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)