diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2397-drm-amd-display-don-t-clean-up-bottom-pipe-plane_sta.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2397-drm-amd-display-don-t-clean-up-bottom-pipe-plane_sta.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2397-drm-amd-display-don-t-clean-up-bottom-pipe-plane_sta.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2397-drm-amd-display-don-t-clean-up-bottom-pipe-plane_sta.patch new file mode 100644 index 00000000..1df72800 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2397-drm-amd-display-don-t-clean-up-bottom-pipe-plane_sta.patch @@ -0,0 +1,49 @@ +From da4d2be68f2ac9a8d3b6c3437159f92b372abc14 Mon Sep 17 00:00:00 2001 +From: Shirish S <shirish.s@amd.com> +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 <shirish.s@amd.com> +Reviewed-by: Harry Wentland <harry.wentland@amd.com> +--- + 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 + |