diff options
| author | Grazvydas Ignotas <notasas@gmail.com> | 2016-10-29 23:32:44 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-10-31 12:33:31 -0400 |
| commit | 91efdb2718e0c5ff014f0cf98cac99f088a9a4d2 (patch) | |
| tree | 86a483405d1d3c14c064a6f5d55fb696f9183371 /drivers/gpu | |
| parent | eef2b41122425dbddd16d70371bd000f601161d6 (diff) | |
| download | linux-91efdb2718e0c5ff014f0cf98cac99f088a9a4d2.tar.bz2 | |
drm/amd/powerplay: don't succeed in getters if fan is missing
Otherwise callers end up using uninitialized data.
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/smu7_thermal.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_thermal.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_thermal.c index fb6c6f6106d5..29d0319b22e6 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_thermal.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_thermal.c @@ -30,7 +30,7 @@ int smu7_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr, struct phm_fan_speed_info *fan_speed_info) { if (hwmgr->thermal_controller.fanInfo.bNoFan) - return 0; + return -ENODEV; fan_speed_info->supports_percent_read = true; fan_speed_info->supports_percent_write = true; @@ -60,7 +60,7 @@ int smu7_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr, uint64_t tmp64; if (hwmgr->thermal_controller.fanInfo.bNoFan) - return 0; + return -ENODEV; duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL1, FMAX_DUTY100); @@ -89,7 +89,7 @@ int smu7_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed) if (hwmgr->thermal_controller.fanInfo.bNoFan || (hwmgr->thermal_controller.fanInfo. ucTachometerPulsesPerRevolution == 0)) - return 0; + return -ENODEV; tach_period = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_TACH_STATUS, TACH_PERIOD); |