[PATCH] drm/powerplay: enable dpm under pass-through

[Yintian Tao]

Repeat enable dpm under pass-through because there is no actually
hardware-fini and real power-off when guest vm shutdown or reboot.
Otherwise, under pass-through it will be failed to populate populate
and upload SCLK MCLK DPM levels due to zero of pcie_speed_table.count.

Change-Id: I7cbc55c650867d00e19241ceea5d98f78b5ac3f5
Signed-off-by: Yintian Tao <yttao at amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c b/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c
index 53207e7..6ef3c87 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c
@@ -75,10 +75,12 @@ int phm_set_power_state(struct pp_hwmgr *hwmgr,
 
 int phm_enable_dynamic_state_management(struct pp_hwmgr *hwmgr)
 {
+	struct amdgpu_device *adev = NULL;
 	int ret = -EINVAL;;
 	PHM_FUNC_CHECK(hwmgr);
+	adev = hwmgr->adev;
 
-	if (smum_is_dpm_running(hwmgr)) {
+	if (smum_is_dpm_running(hwmgr) && !amdgpu_passthrough(adev)) {
 		pr_info("dpm has been enabled\n");
 		return 0;
 	}
-- 
2.7.4