linux-kernel - Re: [RFC PATCH v1 1/2] drm: rockchip/hdmi: add Innosilicon HDMI support

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Message-ID: <5677AAC4.1010405@rock-chips.com>
Date:	Mon, 21 Dec 2015 15:31:16 +0800
From:	Mark yao <mark.yao@...k-chips.com>
To:	Yakir Yang <ykk@...k-chips.com>, Heiko Stuebner <heiko@...ech.de>
CC:	David Airlie <airlied@...ux.ie>,
	Thierry Reding <treding@...dia.com>,
	Rob Herring <robh+dt@...nel.org>,
	Ken Mixte <kmixter@...gle.com>, Ben Chan <benchan@...gle.com>,
	Zheng Yang <zhengyang@...k-chips.com>,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC PATCH v1 1/2] drm: rockchip/hdmi: add Innosilicon HDMI support

On 2015年11月11日 15:46, Yakir Yang wrote:
> +	hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
> +
> +	drm_connector_helper_add(&hdmi->connector,
> +				 &inno_hdmi_connector_helper_funcs);
> +	drm_connector_init(drm, &hdmi->connector, &inno_hdmi_connector_funcs,
> +			   DRM_MODE_CONNECTOR_HDMIA);
> +
> +	hdmi->connector.encoder = encoder;

Pls remove "hdmi->connector.encoder = encoder;"

It would cause a error dump on atomic drm runtime:

WARNING: CPU: 3 PID: 74 at drivers/gpu/drm/drm_atomic_helper.c:682 
drm_atomic_helper_update_legacy_modeset_state+0x6c/0x200()

This issue can be explained from following thread:
https://lkml.org/lkml/2015/11/16/498

Thanks.

-- 
Ｍark Yao


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