From: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx> [ Upstream commit d5bef51f084fccafa984b114ff74a01a64a0e2e3 ] This prevents dpcd access on virtual links. Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx> Reviewed-by: Eric Bernstein <Eric.Bernstein@xxxxxxx> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c index 51e0ee6e7695..6590f51caefa 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c @@ -400,7 +400,7 @@ static bool dp_set_dsc_on_rx(struct pipe_ctx *pipe_ctx, bool enable) struct dc_stream_state *stream = pipe_ctx->stream; bool result = false; - if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) + if (dc_is_virtual_signal(stream->signal) || IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) result = true; else result = dm_helpers_dp_write_dsc_enable(dc->ctx, stream, enable); -- 2.25.1
