[PATCH] drm/amd/pp: Clean register first to avoid read original value

[Rex Zhu]

Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
index aaa9f5b..38cf3a1 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -3368,6 +3368,19 @@ static int smu7_get_gpu_power(struct pp_hwmgr *hwmgr,
 			"Failed to start pm status log!",
 			return -1);
 
+	cgs_write_ind_register(hwmgr->device,
+			CGS_IND_REG__SMC,
+			ixSMU_PM_STATUS_40, 0);
+	cgs_write_ind_register(hwmgr->device,
+			CGS_IND_REG__SMC,
+			ixSMU_PM_STATUS_49, 0);
+	cgs_write_ind_register(hwmgr->device,
+			CGS_IND_REG__SMC,
+			ixSMU_PM_STATUS_94, 0);
+	cgs_write_ind_register(hwmgr->device,
+			CGS_IND_REG__SMC,
+			ixSMU_PM_STATUS_95, 0);
+
 	/* Sampling period from 50ms to 4sec */
 	msleep_interruptible(200);
 
-- 
1.9.1