[PATCH] drm/amd/pm: disallow the fan setting if there is no fan on smu13

[Kenneth Feng <kenneth.feng@amd.com>]

disallow the fan setting if there is no fan on smu13

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
---
 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
index 9b62b45ebb7f..09ef0a7e7679 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
@@ -1131,7 +1131,9 @@ smu_v13_0_display_clock_voltage_request(struct smu_context *smu,
 
 uint32_t smu_v13_0_get_fan_control_mode(struct smu_context *smu)
 {
-	if (!smu_cmn_feature_is_enabled(smu, SMU_FEATURE_FAN_CONTROL_BIT))
+	if (!smu_cmn_feature_is_supported(smu, SMU_FEATURE_FAN_CONTROL_BIT))
+		return AMD_FAN_CTRL_NONE;
+	else if (!smu_cmn_feature_is_enabled(smu, SMU_FEATURE_FAN_CONTROL_BIT))
 		return AMD_FAN_CTRL_MANUAL;
 	else
 		return AMD_FAN_CTRL_AUTO;
@@ -1143,7 +1145,7 @@ smu_v13_0_auto_fan_control(struct smu_context *smu, bool auto_fan_control)
 	int ret = 0;
 
 	if (!smu_cmn_feature_is_supported(smu, SMU_FEATURE_FAN_CONTROL_BIT))
-		return 0;
+		return -EINVAL;
 
 	ret = smu_cmn_feature_set_enabled(smu, SMU_FEATURE_FAN_CONTROL_BIT, auto_fan_control);
 	if (ret)
@@ -1204,7 +1206,8 @@ smu_v13_0_set_fan_control_mode(struct smu_context *smu,
 
 	switch (mode) {
 	case AMD_FAN_CTRL_NONE:
-		ret = smu_v13_0_set_fan_speed_pwm(smu, 255);
+		if (smu_cmn_feature_is_supported(smu, SMU_FEATURE_FAN_CONTROL_BIT))
+			ret = -EINVAL;
 		break;
 	case AMD_FAN_CTRL_MANUAL:
 		ret = smu_v13_0_auto_fan_control(smu, 0);
-- 
2.34.1