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Thu, 26 Apr 2018 22:33:02 +0000 From: Peter Rosin To: linux-kernel@vger.kernel.org Subject: [PATCH 23/24] drm/bridge: require the .owner to be filled in on drm_bridge_attach Date: Fri, 27 Apr 2018 00:31:38 +0200 Message-Id: <20180426223139.16740-24-peda@axentia.se> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180426223139.16740-1-peda@axentia.se> References: <20180426223139.16740-1-peda@axentia.se> MIME-Version: 1.0 X-Originating-IP: [85.226.244.23] X-ClientProxiedBy: HE1PR05CA0366.eurprd05.prod.outlook.com (2603:10a6:7:94::25) To VI1PR0202MB2782.eurprd02.prod.outlook.com (2603:10a6:800:db::7) X-MS-PublicTrafficType: Email X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(7020095)(4652020)(7021125)(5600026)(4534165)(7022125)(4603075)(4627221)(201702281549075)(7048125)(7024125)(7027125)(7028125)(7023125)(2017052603328)(7153060)(7193020); SRVR:VI1PR0202MB2782; X-Microsoft-Exchange-Diagnostics: 1; VI1PR0202MB2782; 3:qAlx9HUmSM0gr1FjQra3OeVK6PhEJHT60uFFSg0ZHgzCFiezZnygBLe7KAYAz/erUDe1f4MAwSRedEfzca9zWqFOylJeMqzq6301EzHMXHHJl9wkPL7F/Cw75UPWXFtex4wHSCVs4/J3IyC6dw1t90MhpMS543NhK9W7Yu8qLfNfJhf6WO48YCmnt98GKJmFGEWAR/ge6BQcGPcTzi5SYeZonPBgLqCFcjUS+qc7zAtp9pGD1hPrWhYNkxqRFVGm; 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Signed-off-by: Peter Rosin --- drivers/gpu/drm/drm_bridge.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 9f023bd84d56..a038da696802 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -115,6 +115,9 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, if (!encoder || !bridge) return -EINVAL; + if (WARN_ON(!bridge->owner)) + return -EINVAL; + if (previous && (!previous->dev || previous->encoder != encoder)) return -EINVAL;