From: Wenjing Liu <Wenjing.Liu@amd.com>
Date: Tue, 22 Aug 2017 15:49:57 -0400
Subject: drm/amd/display: Fix return value from rx irq handler on up request
Git-commit: aaa15026f273c184454ea8672274a682bc161da1
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -1964,11 +1964,11 @@ bool dc_link_handle_hpd_rx_irq(struct dc
* so do not handle as a normal sink status change interrupt.
*/
+ if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.UP_REQ_MSG_RDY)
+ return true;
+
/* check if we have MST msg and return since we poll for it */
- if (hpd_irq_dpcd_data.bytes.device_service_irq.
- bits.DOWN_REP_MSG_RDY ||
- hpd_irq_dpcd_data.bytes.device_service_irq.
- bits.UP_REQ_MSG_RDY)
+ if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.DOWN_REP_MSG_RDY)
return false;
/* For now we only handle 'Downstream port status' case.