linux/debian/patches/patchset-pf/amd-pstate/0005-cpufreq-amd-pstate-Drop-needless-EPP-initialization.patch

From ed39a400d49baf070571bb1da475297a8495aa67 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
@@ -1558,12 +1558,6 @@ 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);
 }