From 23657a437ea2fbccc715fce2dac74e3c923540cf Mon Sep 17 00:00:00 2001
From: Mario Limonciello <mario.limonciello@amd.com>
Date: Fri, 19 Aug 2022 13:01:00 -0500
Subject: [PATCH] platform/x86: thinkpad_acpi: Explicitly set to balanced mode on startup
Git-commit: 23657a437ea2fbccc715fce2dac74e3c923540cf
Patch-mainline: v6.1-rc1
References: bsc#1210050
It was observed that on a Thinkpad T14 Gen1 (AMD) that the platform
profile is starting up in 'low-power' mode after refreshing what the
firmware had. This is most likely a firmware bug, but as a harmless
workaround set the default profile to 'balanced' at thinkpad_acpi startup.
Reported-by: madcatx@atlas.cz
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216347
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220819180101.6383-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/platform/x86/thinkpad_acpi.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 8dad0428a83c..8fbe21ebcc52 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -10592,10 +10592,9 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
/* Ensure initial values are correct */
dytc_profile_refresh();
- /* Set AMT correctly now we know current profile */
- if ((dytc_capabilities & BIT(DYTC_FC_PSC)) &&
- (dytc_capabilities & BIT(DYTC_FC_AMT)))
- dytc_control_amt(dytc_current_profile == PLATFORM_PROFILE_BALANCED);
+ /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */
+ if (dytc_capabilities & BIT(DYTC_FC_PSC))
+ dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
return 0;
}
--
2.35.3