On 19-06-20, 09:51, Finley Xiao wrote:
> 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.
>
Cc: v4.13+ <stable@xxxxxxxxxxxxxxx> # v4.13+
> Fixes: 349d39dc5739 ("thermal: cpu_cooling: merge frequency and power tables")
> Signed-off-by: Finley Xiao <finley.xiao@xxxxxxxxxxxxxx>
> ---
> drivers/thermal/cpufreq_cooling.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/thermal/cpufreq_cooling.c b/drivers/thermal/cpufreq_cooling.c
> index 9e124020519f..6c0e1b053126 100644
> --- a/drivers/thermal/cpufreq_cooling.c
> +++ b/drivers/thermal/cpufreq_cooling.c
> @@ -123,12 +123,12 @@ static u32 cpu_power_to_freq(struct cpufreq_cooling_device *cpufreq_cdev,
> {
> int i;
>
> - for (i = cpufreq_cdev->max_level - 1; i >= 0; i--) {
> - if (power > cpufreq_cdev->em->table[i].power)
> + for (i = cpufreq_cdev->max_level; i >= 0; i--) {
> + if (power >= cpufreq_cdev->em->table[i].power)
> break;
> }
>
> - return cpufreq_cdev->em->table[i + 1].frequency;
> + return cpufreq_cdev->em->table[i].frequency;
> }
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
--
viresh
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