From: Laurentiu Palcu <laurentiu.palcu@xxxxxxxxxxx>
[ Upstream commit 30bdc36b8c776cd4fce5de2a96ff28b37f96942f ]
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@xxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20220721120912.6639-1-laurentiu.palcu@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 9b84df34a6a1..8cf3352d8858 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;
--
2.35.1
