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* [PATCH v2] drm/amd/display: Add error check for avi and vendor infoframe setup function
@ 2025-04-08  2:20 Wentao Liang
  2025-04-09  5:20 ` kernel test robot
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Wentao Liang @ 2025-04-08  2:20 UTC (permalink / raw)
  To: harry.wentland, sunpeng.li, Rodrigo.Siqueira, alexander.deucher,
	christian.koenig, Xinhui.Pan, airlied, simona
  Cc: hamza.mahfooz, chiahsuan.chung, sunil.khatri, alex.hung,
	aurabindo.pillai, hersenxs.wu, mario.limonciello, mwen, amd-gfx,
	dri-devel, linux-kernel, Wentao Liang

The function fill_stream_properties_from_drm_display_mode() calls the
function drm_hdmi_avi_infoframe_from_display_mode() and the
function drm_hdmi_vendor_infoframe_from_display_mode(), but does
not check its return value. Log the error messages to prevent silent
failure if either function fails.

Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
---
v2: Fix code diff error

 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 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 5f216d626cbb..8fc6ba12c82d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6104,6 +6104,7 @@ static void fill_stream_properties_from_drm_display_mode(
 	struct amdgpu_dm_connector *aconnector = NULL;
 	struct hdmi_vendor_infoframe hv_frame;
 	struct hdmi_avi_infoframe avi_frame;
+	ssize_t err;
 
 	if (connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
 		aconnector = to_amdgpu_dm_connector(connector);
@@ -6150,9 +6151,17 @@ static void fill_stream_properties_from_drm_display_mode(
 	}
 
 	if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) {
-		drm_hdmi_avi_infoframe_from_display_mode(&avi_frame, (struct drm_connector *)connector, mode_in);
+		err = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame,
+							       (struct drm_connector *)connector,
+							       mode_in);
+		if (err < 0)
+			dev_err(connector->dev, "Failed to setup avi infoframe: %zd\n", err);
 		timing_out->vic = avi_frame.video_code;
-		drm_hdmi_vendor_infoframe_from_display_mode(&hv_frame, (struct drm_connector *)connector, mode_in);
+		err = drm_hdmi_vendor_infoframe_from_display_mode(&hv_frame,
+								  (struct drm_connector *)connector,
+								  mode_in);
+		if (err < 0)
+			dev_err(connector->dev, "Failed to setup vendor infoframe: %zd\n", err);
 		timing_out->hdmi_vic = hv_frame.vic;
 	}
 
-- 
2.42.0.windows.2


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2025-04-09 15:27 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2025-04-08  2:20 [PATCH v2] drm/amd/display: Add error check for avi and vendor infoframe setup function Wentao Liang
2025-04-09  5:20 ` kernel test robot
2025-04-09  6:01 ` kernel test robot
2025-04-09 15:27 ` Alex Hung

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