linux-kernel - Re: [PATCH] fbdev: udlfb: make CONFIG_FB

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Message-ID: <41ef536d-2399-43f8-8041-c6b0e642aba2@suse.de>
Date: Thu, 2 Oct 2025 08:52:17 +0200
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Helge Deller <deller@....de>, sukrut heroorkar <hsukrut3@...il.com>,
 David Hunter <david.hunter.linux@...il.com>
Cc: kernel test robot <lkp@...el.com>, Bernie Thompson <bernie@...gable.com>,
 Arnd Bergmann <arnd@...db.de>, Randy Dunlap <rdunlap@...radead.org>,
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
 Zsolt Kajtar <soci@....rulez.org>,
 Gonzalo Silvalde Blanco <gonzalo.silvalde@...il.com>,
 linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
 oe-kbuild-all@...ts.linux.dev, skhan@...uxfoundation.org
Subject: Re: [PATCH] fbdev: udlfb: make CONFIG_FB_DEVICE optional

Hi

Am 02.10.25 um 08:41 schrieb Helge Deller:
>>>> kernel test robot noticed the following build errors:
>>>
>>> Did you compile and test this code before submitting this patch?
>>
>> Yes, I had compiled & loaded the udlfb module with no errors. Please
>> let me know how to proceed in this case.
>
> Look at the reported build error, which seems to happen in dev_dbg().
> So, maybe in your testing you did not have debugging enabled?
> The report contains the .config file with which you can test.

Can we rather make an effort to remove the udlfb driver entirely? A few 
years back, there was one user who was still using it because of some 
problems with the DRM udl driver. But I think we've addressed them. The 
discussion is at [1].

[1] 
https://lore.kernel.org/dri-devel/20201130125200.10416-1-tzimmermann@suse.de/

Best regards
Thomas

>
> Helge

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)