[why]
Current pipe merge and split logic only supports cases where new
dc_state is allocated and relies on dc->current_state to gather
information from previous dc_state.
Calls to validate_bandwidth on UPDATE_TYPE_MED would cause an issue
because there is no new dc_state allocated, and data in
dc->current_state would be overwritten during pipe merge.
[how]
Only allow validate_bandwidth when new dc_state space is created.
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
copy_stream_update_to_stream(dc, context, stream, stream_update);
- if (update_type > UPDATE_TYPE_FAST) {
+ if (update_type >= UPDATE_TYPE_FULL) {
if (!dc->res_pool->funcs->validate_bandwidth(dc, context, false)) {
DC_ERROR("Mode validation failed for stream update!\n");
dc_release_state(context);
context->bw_ctx.dml.soc.allow_dram_clock_one_display_vactive =
dc->debug.enable_dram_clock_change_one_display_vactive;
+ /*Unsafe due to current pipe merge and split logic*/
+ ASSERT(context != dc->current_state);
+
if (fast_validate) {
return dcn20_validate_bandwidth_internal(dc, context, true);
}
BW_VAL_TRACE_COUNT();
+ /*Unsafe due to current pipe merge and split logic*/
+ ASSERT(context != dc->current_state);
+
out = dcn20_fast_validate_bw(dc, context, pipes, &pipe_cnt, pipe_split_from, &vlevel);
if (pipe_cnt == 0)