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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>
This commit is contained in:
Alex Deucher 2015-12-19 18:26:55 -05:00
parent 605ed21929
commit 45b0cf54bc
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/powerplay/hwmgr/tonga_thermal.c
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@ -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;