From: Mario Limonciello mario.limonciello@amd.com
mainline inclusion from mainline-v6.10-rc7 commit 102fa9c4b439ca3bd93d13fb53f5b7592d96a109 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAF0D0
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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The behavior introduced in commit f37a4d6b4a2c ("cpufreq: Fix per-policy boost behavior on SoCs using cpufreq_boost_set_sw()") sets up the boost policy incorrectly when boost has been enabled by the platform firmware initially even if a driver sets the policy up.
This is because policy_has_boost_freq() assumes that there is a frequency table set up by the driver and that the boost frequencies are advertised in that table. This assumption doesn't work for acpi-cpufreq or amd-pstate. Only use this check to enable boost if it's not already enabled instead of also disabling it if alreayd enabled.
Fixes: f37a4d6b4a2c ("cpufreq: Fix per-policy boost behavior on SoCs using cpufreq_boost_set_sw()") Link: https://patch.msgid.link/20240626204723.6237-1-mario.limonciello@amd.com Reviewed-by: Sibi Sankar quic_sibis@quicinc.com Reviewed-by: Dhruva Gole d-gole@ti.com Acked-by: Viresh Kumar viresh.kumar@linaro.org Reviewed-by: Gautham R. Shenoy gautham.shenoy@amd.com Suggested-by: Viresh Kumar viresh.kumar@linaro.org Suggested-by: Gautham R. Shenoy gautham.shenoy@amd.com Signed-off-by: Mario Limonciello mario.limonciello@amd.com Cc: All applicable stable@vger.kernel.org Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Lin Yujun linyujun809@huawei.com --- drivers/cpufreq/cpufreq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 1174233593b1..c3a6c20de1e1 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1422,7 +1422,8 @@ static int cpufreq_online(unsigned int cpu) }
/* Let the per-policy boost flag mirror the cpufreq_driver boost during init */ - policy->boost_enabled = cpufreq_boost_enabled() && policy_has_boost_freq(policy); + if (cpufreq_boost_enabled() && policy_has_boost_freq(policy)) + policy->boost_enabled = true;
/* * The initialization has succeeded and the policy is online.