[PATCH] platform/x86: thinkpad_acpi: Explicitly set to balanced mode on startup

From: Mario Limonciello
Date: Fri Aug 19 2022 - 10:01:53 EST


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-and-tested-by: madcatx@xxxxxxxx
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216347
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
drivers/platform/x86/thinkpad_acpi.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 22d4e8633e30..e7e86c0b9ad7 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -10590,12 +10590,7 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
return -ENODEV;

/* 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);
+ dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);

return 0;
}
--
2.34.1