Messages in this thread Patch in this message | | | Date | Mon, 25 Feb 2013 18:22:37 +0100 (CET) | From | Guennadi Liakhovetski <> | Subject | [PATCH] cpufreq: cpufreq-cpu0: use the exact frequency for clk_set_rate() |
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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> ---
Applies on top of my previous patch to fix unsigned freq_Hz "cpufreq: fix sign check of an unsigned variable in cpufreq-cpu0"
drivers/cpufreq/cpufreq-cpu0.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index e7bad3c..6ce9b51 100644 --- 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, cpu; 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; @@ -96,7 +97,7 @@ 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) -- 1.7.2.5
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