linux-kernel - Re: [PATCH RESEND 12/12] Documentation: Update the todo

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Message-ID: <faaf92d2-f157-48c4-af1c-7251f65e8c2d@suse.de>
Date: Wed, 26 Feb 2025 11:21:14 +0100
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Anusha Srivatsa <asrivats@...hat.com>, Joel Stanley <joel@....id.au>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
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Subject: Re: [PATCH RESEND 12/12] Documentation: Update the todo



Am 25.02.25 um 23:20 schrieb Anusha Srivatsa:
> Update the Documentation to be more precise.
>
> v2: Update for clarity
> v3: Further details in Todo
>
> Cc: Thomas Zimmermann <tzimmermann@...e.de>
> Signed-off-by: Anusha Srivatsa <asrivats@...hat.com>

Acked-by: Thomas Zimmermann <tzimmermann@...e.de>

Thanks for the update.

> ---
>   Documentation/gpu/todo.rst | 13 +++++++------
>   1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
> index 256d0d1cb2164bd94f9b610a751b907834d96a21..c57777a24e03d91b1ffe04365f7356f2d938befd 100644
> --- a/Documentation/gpu/todo.rst
> +++ b/Documentation/gpu/todo.rst
> @@ -441,14 +441,15 @@ Contact: Thomas Zimmermann <tzimmermann@...e.de>
>   
>   Level: Intermediate
>   
> -Request memory regions in all drivers
> --------------------------------------
> +Request memory regions in all fbdev drivers
> +--------------------------------------------
>   
> -Go through all drivers and add code to request the memory regions that the
> -driver uses. This requires adding calls to request_mem_region(),
> +Old/ancient fbdev drivers do not request their memory properly.
> +Go through these drivers and add code to request the memory regions
> +that the driver uses. This requires adding calls to request_mem_region(),
>   pci_request_region() or similar functions. Use helpers for managed cleanup
> -where possible.
> -
> +where possible. Problematic areas include hardware that has exclusive ranges
> +like VGA. VGA16fb does not request the range as it is expected.
>   Drivers are pretty bad at doing this and there used to be conflicts among
>   DRM and fbdev drivers. Still, it's the correct thing to do.
>   
>

-- 
--
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)