linux-kernel - Re: [Stable-review] [06/49] drm/kms: remove spaces from connector names (v2)

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Date:	Wed, 05 Jan 2011 23:49:05 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Greg KH <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org, stable@...nel.org,
	Sergej Pupykin <ml@...gej.pp.ru>,
	Alex Deucher <alexdeucher@...il.com>,
	Dave Airlie <airlied@...hat.com>, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, stable-review@...nel.org,
	alan@...rguk.ukuu.org.uk
Subject: Re: [Stable-review] [06/49] drm/kms: remove spaces from connector
 names (v2)

On Wed, 2011-01-05 at 15:00 -0800, Greg KH wrote:
> 2.6.32-longterm review patch.  If anyone has any objections, please let us know.
> 
> ------------------
> 
> From: Alex Deucher <alexdeucher@...il.com>
> 
> commit e76116ca9671e2e5239054a40303b94feab585ad upstream.
> 
> Grub doesn't parse spaces in parameters correctly, so
> this makes it impossible to force video= parameters
> for kms on the grub kernel command line.
> 
> v2: shorten the names to make them easier to type.
[...]
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -144,10 +144,10 @@ static struct drm_conn_prop_enum_list dr
>  	{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
>  	{ DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
>  	{ DRM_MODE_CONNECTOR_Component, "Component", 0 },
> -	{ DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
> -	{ DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
> -	{ DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
> -	{ DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
> +	{ DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
> +	{ DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
[...]

Why change 'DisplayPort', which doesn't have a space in it?  This might
break a previously working kernel command line.

Ben.

-- 
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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