diff options
| author | Evan Quan <evan.quan@amd.com> | 2017-11-01 16:52:08 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-11-01 23:31:13 -0400 |
| commit | 710931c2be5a784c0651111f54bd083e3681c309 (patch) | |
| tree | 8cac23c9eb0724550e44ac5cdf67ff5bae758b02 /drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | |
| parent | 7b38a49d75fb5e90512e63038449222c2ef651ef (diff) | |
drm/amd/powerplay: wrong control mode cause the fan spins faster unnecessarily
The fan control mode can either be FDO_PWM_MODE_STATIC or FDO_PWM_MODE_STATIC_RPM.
Setting it as AMD_FAN_CTRL_AUTO will cause the fan spin faster wrongly.
This can be reproduced by:
'# cat /sys/class/hwmon/hwmon0/pwm1
38
'# cat /sys/class/hwmon/hwmon0/pwm1_enable
2
'# echo "2" > /sys/class/hwmon/hwmon0/pwm1_enable
'# cat /sys/class/hwmon/hwmon0/pwm1
122
The fan speed get faster wrongly even with its original mode echo back.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c')
0 files changed, 0 insertions, 0 deletions