Re: [patch 6/6] Move per-device data out of backlight_properties

["Dmitry Torokhov" <dmitry.torokhov@gmail.com>]

On 8/11/06, Richard Purdie <rpurdie@rpsys.net> wrote:
> On Fri, 2006-08-11 at 01:03 -0400, Dmitry Torokhov wrote:
> > plain text document attachment (backlight-move-data.patch)
> > Backlight: move per-device data out of backlight_properties
> >
> > Data such as current brightness belongs to a device and should not
> > be part of a structure shared between several devices.
>
> I agree there's an issue to address here. Looking at this patch very
> quickly, it breaks all the existing backlight drivers as they know about
> the variables in struct backlight_properties and all their references
> need to be updated e.g.: corgi_bl.c:
>
> if (bd->props->power != FB_BLANK_UNBLANK)
> intensity = 0;
> if (bd->props->fb_blank != FB_BLANK_UNBLANK)
> intensity = 0;
>

Oops, I had them all updated but apparently lost that change. I'll fix
it and resend.

> Thinking about this, ideally, struct backlight_properties would be left
> containing the backlight properties in but become part of struct
> backlight_device (and allocated with it).

Why would you want to separate properties into a structure? You don't
normally pass a set of properties around so I am not sure why would we
need this...

-- 
Dmitry