From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
commit 552abb884e97d26589964e5a8c7e736f852f95f0 upstream.
After commit 18c49926c4bf ("cpufreq: Add QoS requests for userspace
constraints") the return value of freq_qos_update_request(), that can
be 1, passed by cpufreq_boost_set_sw() to its caller sometimes
confuses the latter, which only expects to see 0 or negative error
codes, so notice that cpufreq_boost_set_sw() can return an error code
(which should not be -EINVAL for that matter) as soon as the first
policy without a frequency table is found (because either all policies
have a frequency table or none of them have it) and rework it to meet
its caller's expectations.
Fixes: 18c49926c4bf ("cpufreq: Add QoS requests for userspace constraints")
Reported-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
Reported-by: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx>
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Cc: 5.3+ <stable@xxxxxxxxxxxxxxx> # 5.3+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/cpufreq/cpufreq.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2535,26 +2535,27 @@ EXPORT_SYMBOL_GPL(cpufreq_update_limits)
static int cpufreq_boost_set_sw(int state)
{
struct cpufreq_policy *policy;
- int ret = -EINVAL;
for_each_active_policy(policy) {
+ int ret;
+
if (!policy->freq_table)
- continue;
+ return -ENXIO;
ret = cpufreq_frequency_table_cpuinfo(policy,
policy->freq_table);
if (ret) {
pr_err("%s: Policy frequency update failed\n",
__func__);
- break;
+ return ret;
}
ret = freq_qos_update_request(policy->max_freq_req, policy->max);
if (ret < 0)
- break;
+ return ret;
}
- return ret;
+ return 0;
}
int cpufreq_boost_trigger_state(int state)
