From: Finley Xiao finley.xiao@rock-chips.com
commit 371a3bc79c11b707d7a1b7a2c938dc3cc042fffb upstream.
The function cpu_power_to_freq is used to find a frequency and set the cooling device to consume at most the power to be converted. For example, if the power to be converted is 80mW, and the em table is as follow. struct em_cap_state table[] = { /* KHz mW */ { 1008000, 36, 0 }, { 1200000, 49, 0 }, { 1296000, 59, 0 }, { 1416000, 72, 0 }, { 1512000, 86, 0 }, }; The target frequency should be 1416000KHz, not 1512000KHz.
Fixes: 349d39dc5739 ("thermal: cpu_cooling: merge frequency and power tables") Cc: stable@vger.kernel.org # v4.13+ Signed-off-by: Finley Xiao finley.xiao@rock-chips.com Acked-by: Viresh Kumar viresh.kumar@linaro.org Reviewed-by: Amit Kucheria amit.kucheria@linaro.org Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Link: https://lore.kernel.org/r/20200619090825.32747-1-finley.xiao@rock-chips.com Signed-off-by: Viresh Kumar viresh.kumar@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/thermal/cpu_cooling.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index 9df6b7260466..8592ef694a5a 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -278,11 +278,11 @@ static u32 cpu_power_to_freq(struct cpufreq_cooling_device *cpufreq_cdev, int i; struct freq_table *freq_table = cpufreq_cdev->freq_table;
- for (i = 1; i <= cpufreq_cdev->max_level; i++) - if (power > freq_table[i].power) + for (i = 0; i < cpufreq_cdev->max_level; i++) + if (power >= freq_table[i].power) break;
- return freq_table[i - 1].frequency; + return freq_table[i].frequency; }
/**