linux-kernel - Re: [PATCHv2] drm: fb_helper: prefer to use mode, which is not DRM_MODE_TYPE

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Date:	Mon, 20 Apr 2015 13:20:05 +0200
From:	Radek Dostál <rd@...ekdostal.com>
To:	Chris Wilson <chris@...is-wilson.co.uk>, airlied@...ux.ie,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2] drm: fb_helper: prefer to use mode, which is not DRM_MODE_TYPE_USERDEF

Hi Chris,

On 04/20/2015 01:00 PM, Chris Wilson wrote:
> Can you do a WARN_ON(list_empty(&connector->modes)) here to see at what
> point we set up the invalid GTF mode?

sure please see attached patch adding WARN_ON and corresponding output
of dmesg. As mentioned in the original commit, the mode is indeed added
in drm_helper_probe_add_cmdline_mode.

Thanks,
Radek

View attachment "dmesg" of type "text/plain" (42487 bytes)

View attachment "patch" of type "text/plain" (970 bytes)