From 247236b22aa72a94ebde753de1fa529f94295ba1 Mon Sep 17 00:00:00 2001 From: Evan Quan Date: Thu, 19 Jul 2018 18:40:25 +0800 Subject: [PATCH 0089/2940] drm/amd/powerplay: avoid enabling/disabling uvd/vce dpm twice For vega20, there are two UVD rings which share one powerplay instance. Under some case(two rings used parallel), the uvd dpm is disabled twice which causes the SMC hang. Signed-off-by: Evan Quan Reviewed-by: Rex Zhu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c index ad6ce148fb3f..c4302bc41a24 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c @@ -2464,6 +2464,9 @@ static void vega20_power_gate_vce(struct pp_hwmgr *hwmgr, bool bgate) { struct vega20_hwmgr *data = (struct vega20_hwmgr *)(hwmgr->backend); + if (data->vce_power_gated == bgate) + return ; + data->vce_power_gated = bgate; vega20_enable_disable_vce_dpm(hwmgr, !bgate); } @@ -2472,6 +2475,9 @@ static void vega20_power_gate_uvd(struct pp_hwmgr *hwmgr, bool bgate) { struct vega20_hwmgr *data = (struct vega20_hwmgr *)(hwmgr->backend); + if (data->uvd_power_gated == bgate) + return ; + data->uvd_power_gated = bgate; vega20_enable_disable_uvd_dpm(hwmgr, !bgate); } -- 2.17.1