From: Laurentiu Palcu laurentiu.palcu@oss.nxp.com
[ 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@oss.nxp.com Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Link: https://patchwork.freedesktop.org/patch/msgid/20220721120912.6639-1-laurenti... Signed-off-by: Sasha Levin sashal@kernel.org --- 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;