[PATCH] drm/amd/pm: ingore failure of GmiPwrDnControl

[Tao Zhou]

PMFW only returns 0 on master die and sends NACK back on other dies for
the message.

Signed-off-by: Tao Zhou <tao.zhou1 at amd.com>
---
 .../gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c   | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
index 261892977654..121b0ab5823f 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
@@ -1625,10 +1625,18 @@ static int aldebaran_set_df_cstate(struct smu_context *smu,
 
 static int aldebaran_allow_xgmi_power_down(struct smu_context *smu, bool en)
 {
-	return smu_cmn_send_smc_msg_with_param(smu,
-					       SMU_MSG_GmiPwrDnControl,
-					       en ? 0 : 1,
-					       NULL);
+	int ret;
+
+	ret = smu_cmn_send_smc_msg_with_param(smu,
+					   SMU_MSG_GmiPwrDnControl,
+					   en ? 0 : 1,
+					   NULL);
+	/* The message only works on master die and NACK will be sent
+	   back for other dies, ingore CMD failure for the message */
+	if (ret == -EIO)
+		ret = 0;
+
+	return ret;
 }
 
 static const struct throttling_logging_label {
-- 
2.17.1