From d12babaf15404eb102a84f8f9e6b7112c94c8221 Mon Sep 17 00:00:00 2001 From: Xiaodong Yan Date: Fri, 6 Dec 2019 18:43:53 +0800 Subject: [PATCH 1/1] drm/amd/display: add event type check before restart the authentication [Why] Some combined docks will always trigger CP_IRQ but there's nothing the driver needs to take care of, but the CP_IRQ breaks the original hdcp state and triggers the driver to restart the authentication. [How] Add the event type check before restart the authentication or resend the stream management Signed-off-by: Xiaodong Yan Reviewed-by: Wenjing Liu Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- .../gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c index da190739a969..8cae3e3aacd5 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c @@ -630,7 +630,10 @@ enum mod_hdcp_status mod_hdcp_hdcp2_dp_transition(struct mod_hdcp *hdcp, break; } else if (input->prepare_stream_manage != PASS || input->stream_manage_write != PASS) { - fail_and_restart_in_ms(0, &status, output); + if (event_ctx->event == MOD_HDCP_EVENT_CALLBACK) + fail_and_restart_in_ms(0, &status, output); + else + increment_stay_counter(hdcp); break; } callback_in_ms(100, output); @@ -655,10 +658,12 @@ enum mod_hdcp_status mod_hdcp_hdcp2_dp_transition(struct mod_hdcp *hdcp, */ if (hdcp->auth.count.stream_management_retry_count > 10) { fail_and_restart_in_ms(0, &status, output); - } else { + } else if (event_ctx->event == MOD_HDCP_EVENT_CALLBACK) { hdcp->auth.count.stream_management_retry_count++; callback_in_ms(0, output); set_state_id(hdcp, output, D2_A9_SEND_STREAM_MANAGEMENT); + } else { + increment_stay_counter(hdcp); } break; } -- 2.45.2