[PATCH] drm/imx/dcss: get rid of HPD warning message

Laurentiu Palcu laurentiu.palcu at oss.nxp.com
Thu Jul 21 12:09:12 UTC 2022


When DCSS + MIPI_DSI is used, and the last bridge in the chain supports
HPD, we can see a "Hot plug detection already enabled" warning stack
trace dump that's thrown when DCSS is initialized.

The problem appeared when HPD was enabled by default in the
bridge_connector initialization, which made the
drm_bridge_connector_enable_hpd() call, in DCSS init path, redundant.
So, let's remove that call.

Fixes: 09077bc311658 ("drm/bridge_connector: enable HPD by default if supported")
Signed-off-by: Laurentiu Palcu <laurentiu.palcu at oss.nxp.com>
---
 drivers/gpu/drm/imx/dcss/dcss-kms.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/imx/dcss/dcss-kms.c b/drivers/gpu/drm/imx/dcss/dcss-kms.c
index 9b84df34a6a12..8cf3352d88582 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-kms.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-kms.c
@@ -142,8 +142,6 @@ struct dcss_kms_dev *dcss_kms_attach(struct dcss_dev *dcss)
 
 	drm_kms_helper_poll_init(drm);
 
-	drm_bridge_connector_enable_hpd(kms->connector);
-
 	ret = drm_dev_register(drm, 0);
 	if (ret)
 		goto cleanup_crtc;
-- 
2.17.1



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