This is a note to let you know that I've just added the patch titled
drm/amd/pm: avoid false alarm due to confusing softwareshutdowntemp setting
to the 5.4-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:
drm-amd-pm-avoid-false-alarm-due-to-confusing-softwareshutdowntemp-setting.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 971df65cbf32da9bc9af52c1196ca504dd316086 Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@xxxxxxx>
Date: Tue, 25 Aug 2020 13:51:29 +0800
Subject: drm/amd/pm: avoid false alarm due to confusing softwareshutdowntemp setting
From: Evan Quan <evan.quan@xxxxxxx>
commit 971df65cbf32da9bc9af52c1196ca504dd316086 upstream.
Normally softwareshutdowntemp should be greater than Thotspotlimit.
However, on some VEGA10 ASIC, the softwareshutdowntemp is 91C while
Thotspotlimit is 105C. This seems not right and may trigger some
false alarms.
Signed-off-by: Evan Quan <evan.quan@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/powerplay/hwmgr/vega10_thermal.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_thermal.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_thermal.c
@@ -375,8 +375,18 @@ static int vega10_thermal_set_temperatur
/* compare them in unit celsius degree */
if (low < range->min / PP_TEMPERATURE_UNITS_PER_CENTIGRADES)
low = range->min / PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
- if (high > tdp_table->usSoftwareShutdownTemp)
- high = tdp_table->usSoftwareShutdownTemp;
+
+ /*
+ * As a common sense, usSoftwareShutdownTemp should be bigger
+ * than ThotspotLimit. For any invalid usSoftwareShutdownTemp,
+ * we will just use the max possible setting VEGA10_THERMAL_MAXIMUM_ALERT_TEMP
+ * to avoid false alarms.
+ */
+ if ((tdp_table->usSoftwareShutdownTemp >
+ range->hotspot_crit_max / PP_TEMPERATURE_UNITS_PER_CENTIGRADES)) {
+ if (high > tdp_table->usSoftwareShutdownTemp)
+ high = tdp_table->usSoftwareShutdownTemp;
+ }
if (low > high)
return -EINVAL;
Patches currently in stable-queue which might be from evan.quan@xxxxxxx are
queue-5.4/drm-amd-pm-avoid-false-alarm-due-to-confusing-softwareshutdowntemp-setting.patch
