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linux/debian/patches/patchset-pf/amd-pstate/0026-cpufreq-amd-pstate-Drop-needless-EPP-initialization.patch
Konstantin Demin 8cbaf1dea2 add 3rd party/custom patches
3rd patchs (in alphabetical order):
- bbr3
- ntsync5
- openwrt
- pf-kernel
- xanmod
- zen

no configuration changes for now
2024-10-29 05:12:06 +03:00

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991 B
Diff

From fa46d2873c9fa4060ce407e4bc5c7e29babce9d0 Mon Sep 17 00:00:00 2001
From: Mario Limonciello <mario.limonciello@amd.com>
Date: Sat, 12 Oct 2024 12:45:19 -0500
Subject: cpufreq/amd-pstate: Drop needless EPP initialization
The EPP value doesn't need to be cached to the CPPC request in
amd_pstate_epp_update_limit() because it's passed as an argument
at the end to amd_pstate_set_epp() and stored at that time.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
drivers/cpufreq/amd-pstate.c | 6 ------
1 file changed, 6 deletions(-)
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -1548,12 +1548,6 @@ static int amd_pstate_epp_update_limit(s
if (cpudata->policy == CPUFREQ_POLICY_PERFORMANCE)
epp = 0;
- /* Set initial EPP value */
- if (cpu_feature_enabled(X86_FEATURE_CPPC)) {
- value &= ~GENMASK_ULL(31, 24);
- value |= (u64)epp << 24;
- }
-
WRITE_ONCE(cpudata->cppc_req_cached, value);
return amd_pstate_set_epp(cpudata, epp);
}