tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cpufreq: scpi: compare kHz instead of Hz

Browse Source 
[ Upstream commit 4742da9774a416908ef8e3916164192c15c0e2d1 ]

The CPU rate from clk_get_rate() may not be divisible by 1000
(e.g., 133333333). But the rate calculated from frequency(kHz) is
always divisible by 1000 (e.g., 133333000).
Comparing the rate causes a warning during CPU scaling:
"cpufreq: __target_index: Failed to change cpu frequency: -5".
When we choose to compare kHz here, the issue does not occur.

Fixes: 343a8d17fa ("cpufreq: scpi: remove arm_big_little dependency")
Signed-off-by: zuoqian <zuoqian113@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
zuoqian
2025-01-25 08:49:49 +00:00
committed by Greg Kroah-Hartman
parent bc4d689a23
commit 40426fc097
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/cpufreq/scpi-cpufreq.c
View File

@@ -39,8 +39,9 @@ static unsigned int scpi_cpufreq_get_rate(unsigned int cpu)
static int
scpi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index)
{
u64 rate = policy->freq_table[index].frequency * 1000;
unsigned long freq_khz = policy->freq_table[index].frequency;
struct scpi_data *priv = policy->driver_data;
unsigned long rate = freq_khz * 1000;
int ret;
ret = clk_set_rate(priv->clk, rate);
@@ -48,7 +49,7 @@ scpi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index)
if (ret)
return ret;
if (clk_get_rate(priv->clk) != rate)
if (clk_get_rate(priv->clk) / 1000 != freq_khz)
return -EIO;
return 0;