Series is Reviewed-by: Evan Quan <evan.quan@xxxxxxx>
> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Rex
> Zhu
> Sent: 2018年9月30日 14:18
> To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Zhu, Rex <Rex.Zhu@xxxxxxx>
> Subject: [PATCH 5/5] drm/amdgpu: Disable sysfs pwm1 if not in manual fan
> control
>
> Following lm-sensors 3.0.0,
> Only enable pwm1 sysfs when fan control mode(pwm1_enable) in manual
>
> Signed-off-by: Rex Zhu <Rex.Zhu@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> index 1d85706..d6bd5ab 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> @@ -1120,12 +1120,19 @@ static ssize_t amdgpu_hwmon_set_pwm1(struct
> device *dev,
> struct amdgpu_device *adev = dev_get_drvdata(dev);
> int err;
> u32 value;
> + u32 pwm_mode;
>
> /* Can't adjust fan when the card is off */
> if ((adev->flags & AMD_IS_PX) &&
> (adev->ddev->switch_power_state !=
> DRM_SWITCH_POWER_ON))
> return -EINVAL;
>
> + pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);
> + if (pwm_mode != AMD_FAN_CTRL_MANUAL) {
> + pr_info("manual fan speed control should be enabled
> first\n");
> + return -EINVAL;
> + }
> +
> err = kstrtou32(buf, 10, &value);
> if (err)
> return err;
> --
> 1.9.1
>
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