From: Wenjing Liu <wenjing....@amd.com>

Change-Id: I0a7a84dabac0929c42f6cbf410b2caa90f81a019
Signed-off-by: Wenjing Liu <wenjing....@amd.com>
Reviewed-by: Wenjing Liu <wenjing....@amd.com>
Acked-by: Harry Wentland <harry.wentl...@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c  | 5 ++++-
 drivers/gpu/drm/amd/display/dc/dc.h               | 3 ++-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 83775758f83d..8f1805841150 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -914,7 +914,7 @@ static void handle_hpd_rx_irq(void *param)
        if (aconnector->dc_link->type != dc_connection_mst_branch)
                mutex_lock(&aconnector->hpd_lock);
 
-       if (dc_link_handle_hpd_rx_irq(aconnector->dc_link) &&
+       if (dc_link_handle_hpd_rx_irq(aconnector->dc_link, NULL) &&
                        !is_mst_root_connector) {
                /* Downstream Port status changed. */
                if (dc_link_detect(aconnector->dc_link, false)) {
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c 
b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index dd3f57fce834..445cd226d36d 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -1924,7 +1924,7 @@ static void handle_automated_test(struct core_link *link)
                        sizeof(test_response));
 }
 
-bool dc_link_handle_hpd_rx_irq(const struct dc_link *dc_link)
+bool dc_link_handle_hpd_rx_irq(const struct dc_link *dc_link, union 
hpd_irq_data *out_hpd_irq_dpcd_data)
 {
        struct core_link *link = DC_LINK_TO_LINK(dc_link);
        union hpd_irq_data hpd_irq_dpcd_data = {{{{0}}}};
@@ -1939,12 +1939,15 @@ bool dc_link_handle_hpd_rx_irq(const struct dc_link 
*dc_link)
                "%s: Got short pulse HPD on link %d\n",
                __func__, link->public.link_index);
 
+
         /* All the "handle_hpd_irq_xxx()" methods
                 * should be called only after
                 * dal_dpsst_ls_read_hpd_irq_data
                 * Order of calls is important too
                 */
        result = read_hpd_rx_irq_data(link, &hpd_irq_dpcd_data);
+       if (out_hpd_irq_dpcd_data)
+               *out_hpd_irq_dpcd_data = hpd_irq_dpcd_data;
 
        if (result != DC_OK) {
                dm_logger_write(link->ctx->logger, LOG_HW_HPD_IRQ,
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h 
b/drivers/gpu/drm/amd/display/dc/dc.h
index 07f064f53d85..7ecbff792e66 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -755,7 +755,8 @@ bool dc_link_detect(const struct dc_link *dc_link, bool 
boot);
  * detection.
  * false - no change in Downstream port status. No further action required
  * from DM. */
-bool dc_link_handle_hpd_rx_irq(const struct dc_link *dc_link);
+bool dc_link_handle_hpd_rx_irq(const struct dc_link *dc_link,
+               union hpd_irq_data *hpd_irq_dpcd_data);
 
 struct dc_sink_init_data;
 
-- 
2.11.0

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