linux-kernel - Re: [PATCH] fbdev: Have CONFIG_FB

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Date: Wed, 8 May 2024 22:36:13 +0200
From: Sam Ravnborg <sam@...nborg.org>
To: Arnd Bergmann <arnd@...db.de>
Cc: Florian Fainelli <florian.fainelli@...adcom.com>,
	Daniel Vetter <daniel@...ll.ch>, linux-kernel@...r.kernel.org,
	Helge Deller <deller@....de>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Javier Martinez Canillas <javierm@...hat.com>,
	"open list:FRAMEBUFFER LAYER" <linux-fbdev@...r.kernel.org>,
	"open list:FRAMEBUFFER LAYER" <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH] fbdev: Have CONFIG_FB_NOTIFY be tristate

Hi Arnd,

> 
> I think if you want to do a new version, that is likely to run
> into new problems, given that this part of fbdev is particularly
> fragile and partly wrong. On the other hand, it would be nice to
> have a patch to limit the use of the notifiers to the smallest
> set of kernel configs that actually need it, and leave it turned
> off for everything else.
> 
> These are the ones I could find:
> 
> - CONFIG_GUMSTIX_AM200EPD (FB_EVENT_FB_REGISTERED)

I was surprised to see this driver is still around as many other old
drivers was nuked as part of the pxa cleanup.
It is the only user of FB_EVENT_FB_REGISTERED - so a potential cleanup
if the driver is no longer relevant.

Just a drive-by comment, this should not stop a v2 of the patchset.

	Sam