This is a note to let you know that I've just added the patch titled
cpufreq: amd-pstate: Remove fast_switch_possible flag from active driver
to the 6.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cpufreq-amd-pstate-remove-fast_switch_possible-flag-.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 81f366c503753c3b73e7b0f2823e23382fab96b3
Author: Wyes Karny <wyes.karny@xxxxxxx>
Date: Wed May 17 16:28:16 2023 +0000
cpufreq: amd-pstate: Remove fast_switch_possible flag from active driver
[ Upstream commit 249b62c448de7117c18531d626aed6e153cdfd75 ]
amd_pstate active mode driver is only compatible with static governors.
Therefore it doesn't need fast_switch functionality. Remove
fast_switch_possible flag from amd_pstate active mode driver.
Fixes: ffa5096a7c33 ("cpufreq: amd-pstate: implement Pstate EPP support for the AMD processors")
Signed-off-by: Wyes Karny <wyes.karny@xxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 8dd46fad151eb..fda15b4a0770f 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -996,7 +996,6 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
policy->policy = CPUFREQ_POLICY_POWERSAVE;
if (boot_cpu_has(X86_FEATURE_CPPC)) {
- policy->fast_switch_possible = true;
ret = rdmsrl_on_cpu(cpudata->cpu, MSR_AMD_CPPC_REQ, &value);
if (ret)
return ret;
@@ -1019,7 +1018,6 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
static int amd_pstate_epp_cpu_exit(struct cpufreq_policy *policy)
{
pr_debug("CPU %d exiting\n", policy->cpu);
- policy->fast_switch_possible = false;
return 0;
}
