From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Thu, 18 Jan 2018 14:51:28 -0500
Subject: drm/amd/display: Check hubp in pipe_ctx not in res_pool.
Git-commit: 24a30505f312287b2978f8f9180a3bc2da4fd80c
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

When disable plane, check power gate flag in hubp with pipe_ctx,
not with res_pool.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -680,7 +680,7 @@ static void plane_atomic_disable(struct
 
 static void dcn10_disable_plane(struct dc *dc, struct pipe_ctx *pipe_ctx)
 {
-	if (dc->res_pool->hubps[pipe_ctx->pipe_idx]->power_gated)
+	if (!pipe_ctx->plane_res.hubp || pipe_ctx->plane_res.hubp->power_gated)
 		return;
 
 	plane_atomic_disable(dc, pipe_ctx);