From da4d2be68f2ac9a8d3b6c3437159f92b372abc14 Mon Sep 17 00:00:00 2001 From: Shirish S Date: Tue, 26 Sep 2017 12:26:41 +0530 Subject: [PATCH 2397/4131] drm/amd/display: don't clean-up bottom pipe plane_state In the scenario of setting underlay, dc_validate_global_state() is called after constructing the context with all relevant bottom_pipe related configurations in dm_update_planes_state(). Currently, in dc_validate_global_state(), without checking for bottom_pipe's existence, the pipe_ctx structure is initialised to 0, hence nullyfying the plane_state of bottom_pipe which shall be accessed in populate_initial_data() called from bw_calcs(). Due to this null pointer access kernel panics and leads to reboot when underlay is tried to set. This patch fixes the issue by no longer clearing the top_pipe. This workaround is no longer required. Signed-off-by: Shirish S Reviewed-by: Harry Wentland --- drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index d470657..b7dc31b 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1729,14 +1729,6 @@ bool dc_validate_global_state( dc, new_ctx) != DC_OK) return false; - /* TODO without this SWDEV-114774 brakes */ - for (i = 0; i < dc->res_pool->pipe_count; i++) { - struct pipe_ctx *pipe_ctx = &new_ctx->res_ctx.pipe_ctx[i]; - - if (pipe_ctx->top_pipe) - memset(pipe_ctx, 0, sizeof(*pipe_ctx)); - } - for (i = 0; new_ctx && i < new_ctx->stream_count; i++) { struct dc_stream_state *stream = new_ctx->streams[i]; -- 2.7.4