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Message-Id: <20180516101510.13215-26-peda@axentia.se>
Date: Wed, 16 May 2018 12:15:09 +0200
From: Peter Rosin <peda@...ntia.se>
To: linux-kernel@...r.kernel.org
Cc: Peter Rosin <peda@...ntia.se>,
Archit Taneja <architt@...eaurora.org>,
Andrzej Hajda <a.hajda@...sung.com>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
David Airlie <airlied@...ux.ie>,
Martin Donnelly <martin.donnelly@...com>,
Martyn Welch <martyn.welch@...labora.co.uk>,
Gustavo Padovan <gustavo@...ovan.org>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Sean Paul <seanpaul@...omium.org>,
Inki Dae <inki.dae@...sung.com>,
Joonyoung Shim <jy0922.shim@...sung.com>,
Seung-Woo Kim <sw0312.kim@...sung.com>,
Kyungmin Park <kyungmin.park@...sung.com>,
Kukjin Kim <kgene@...nel.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
CK Hu <ck.hu@...iatek.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Matthias Brugger <matthias.bgg@...il.com>,
Rob Clark <robdclark@...il.com>,
Sandy Huang <hjc@...k-chips.com>,
Heiko Stübner <heiko@...ech.de>,
Benjamin Gaignard <benjamin.gaignard@...aro.org>,
Vincent Abriou <vincent.abriou@...com>,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org,
linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
freedreno@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
linux-rockchip@...ts.infradead.org, Jyri Sarha <jsarha@...com>,
Daniel Vetter <daniel@...ll.ch>
Subject: [PATCH v3 25/26] drm/bridge: require the owner .odev to be filled in on drm_bridge_add/attach
The .odev owner device will be handy to have around.
Reviewed-by: Andrzej Hajda <a.hajda@...sung.com>
Acked-by: Daniel Vetter <daniel.vetter@...ll.ch>
Signed-off-by: Peter Rosin <peda@...ntia.se>
---
drivers/gpu/drm/drm_bridge.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index df084db33494..78d186b6831b 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -70,6 +70,9 @@ static LIST_HEAD(bridge_list);
*/
void drm_bridge_add(struct drm_bridge *bridge)
{
+ if (WARN_ON(!bridge->odev))
+ return;
+
mutex_lock(&bridge_lock);
list_add_tail(&bridge->list, &bridge_list);
mutex_unlock(&bridge_lock);
@@ -115,6 +118,9 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
if (!encoder || !bridge)
return -EINVAL;
+ if (WARN_ON(!bridge->odev))
+ return -EINVAL;
+
if (previous && (!previous->dev || previous->encoder != encoder))
return -EINVAL;
--
2.11.0
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