Re: [linux-fbdev] fbdev minor and major numbers, which file to believe, and other stuff

[Geert U. <ge...@li...>]

On Wed, 7 Mar 2001, Sven LUTHER wrote:
> linux/Documentation/fb/framebuffer.txt says :
> 
> By convention, the following device nodes are used (numbers indicate the
> device minor numbers):
> 
>       0 = /dev/fb0      First frame buffer
>       1 = /dev/fb1      Second frame buffer
>       ...
>      31 = /dev/fb31     32nd frame buffer
> 
> but linux/Documentation/devices.txt says :
> 
>  29 char        Universal frame buffer
>                   0 = /dev/fb0          First frame buffer
>                  32 = /dev/fb1          Second frame buffer
>                 ...
>                 224 = /dev/fb7          Eighth frame buffer
> 
>                 All additional minor numbers are reserved.  
> 
> Which one should i believe ? Notice, that on my debian system, MAKEDEV is

linux/Documentation/fb/framebuffer.txt.

Or linux/Documentation/devices.txt in 2.4.2-ac13. Linux just throws away all
patches to change this I sent so far :-(

> building fb# conforming to the devices.txt stuff, (makedev version
> 2.3.1-50.1). this is from unstable (but a few weeks old already).

Ugh...

If you use the old minors, you'll see a warning printed on the console.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@li...

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds