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| 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 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | drm/amd/powerplay: fix memory leak of hardcoded pptable (diff) | |
| download | linux-dev-710931c2be5a784c0651111f54bd083e3681c309.tar.xz linux-dev-710931c2be5a784c0651111f54bd083e3681c309.zip | |
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 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions