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-rw-r--r--common/recipes-kernel/linux/files/0136-amd-powerplay-don-t-enable-ucode-fan-control-if-vbio.patch32
1 files changed, 32 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0136-amd-powerplay-don-t-enable-ucode-fan-control-if-vbio.patch b/common/recipes-kernel/linux/files/0136-amd-powerplay-don-t-enable-ucode-fan-control-if-vbio.patch
new file mode 100644
index 00000000..3b456461
--- /dev/null
+++ b/common/recipes-kernel/linux/files/0136-amd-powerplay-don-t-enable-ucode-fan-control-if-vbio.patch
@@ -0,0 +1,32 @@
+From 8c518450c658851d39ad5b24a4d4952b39825e9a Mon Sep 17 00:00:00 2001
+From: Alex Deucher <alexander.deucher@amd.com>
+Date: Sat, 19 Dec 2015 18:26:55 -0500
+Subject: [PATCH 0136/1110] amd/powerplay: don't enable ucode fan control if
+ vbios has no fan table
+
+Some systems have a single fan controlled by ACPI or some other
+method.
+
+Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/powerplay/hwmgr/tonga_thermal.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_thermal.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_thermal.c
+index 5da7586..2e159b0 100644
+--- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_thermal.c
++++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_thermal.c
+@@ -371,6 +371,9 @@ int tf_tonga_thermal_setup_fan_table(struct pp_hwmgr *hwmgr, void *input, void *
+ int res;
+ uint64_t tmp64;
+
++ if (!phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_MicrocodeFanControl))
++ return 0;
++
+ if (0 == data->fan_table_start) {
+ phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_MicrocodeFanControl);
+ return 0;
+--
+2.7.4
+