From: Lucas Stach <l.stach@pengutronix.de>
Date: Fri, 13 Jan 2017 18:36:30 +0100
Subject: drm: don't link DP aux i2c adapter to the hardware device node
Git-commit: 17ab7806de0c10d27cdbda8ef57ca680bdd24315
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The i2c adapter on DP AUX is purely a software construct. Linking
it to the device node of the parent device is wrong, as it leads to
2 devices sharing the same device node, which is bad practice, as
well as the i2c trying to populate children of the i2c adapter by
looking at the child device nodes of the parent device.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170113173630.22138-1-l.stach@pengutronix.de

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/drm_dp_helper.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1097,7 +1097,6 @@ int drm_dp_aux_register(struct drm_dp_au
 	aux->ddc.class = I2C_CLASS_DDC;
 	aux->ddc.owner = THIS_MODULE;
 	aux->ddc.dev.parent = aux->dev;
-	aux->ddc.dev.of_node = aux->dev->of_node;
 
 	strlcpy(aux->ddc.name, aux->name ? aux->name : dev_name(aux->dev),
 		sizeof(aux->ddc.name));