diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch new file mode 100644 index 00000000..71f7e2d8 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/0464-drm-amdgpu-Disable-sysfs-pwm1-if-not-in-manual-fan-c.patch @@ -0,0 +1,43 @@ +From 8ee8fa0d4bdfbaab8b40816586a6f66aa64a9782 Mon Sep 17 00:00:00 2001 +From: Rex Zhu <Rex.Zhu@amd.com> +Date: Fri, 28 Sep 2018 16:01:48 +0800 +Subject: [PATCH 0464/2940] 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 + +Reviewed-by: Evan Quan <evan.quan@amd.com> +Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> +--- + 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 a9f68753ec7f..68548fbdee09 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; +-- +2.17.1 + |