linux-kernel - [PATCH 07/30] drm/bridge/analogix/anx78xx: Add missing drm_dp_aux

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Date:   Fri, 19 Feb 2021 16:53:03 -0500
From:   Lyude Paul <lyude@...hat.com>
To:     intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        amd-gfx@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Thomas Zimmermann <tzimmermann@...e.de>
Cc:     Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Torsten Duwe <duwe@....de>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 07/30] drm/bridge/analogix/anx78xx: Add missing drm_dp_aux_unregister() call

Surprisingly, this bridge actually registers it's AUX adapter at the
correct time already. Nice job! However, it does forget to actually
unregister the AUX adapter, so let's add a bridge function to handle that.

Signed-off-by: Lyude Paul <lyude@...hat.com>
---
 drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
index 81debd02c169..ec4607dc01eb 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
@@ -942,6 +942,11 @@ static int anx78xx_bridge_attach(struct drm_bridge *bridge,
 	return 0;
 }
 
+static void anx78xx_bridge_detach(struct drm_bridge *bridge)
+{
+	drm_dp_aux_unregister(&bridge_to_anx78xx(bridge)->aux);
+}
+
 static enum drm_mode_status
 anx78xx_bridge_mode_valid(struct drm_bridge *bridge,
 			  const struct drm_display_info *info,
@@ -1013,6 +1018,7 @@ static void anx78xx_bridge_enable(struct drm_bridge *bridge)
 
 static const struct drm_bridge_funcs anx78xx_bridge_funcs = {
 	.attach = anx78xx_bridge_attach,
+	.detach = anx78xx_bridge_detach,
 	.mode_valid = anx78xx_bridge_mode_valid,
 	.disable = anx78xx_bridge_disable,
 	.mode_set = anx78xx_bridge_mode_set,
-- 
2.29.2