Why does the Comtrol Rocketport card not have a major assigned?

Why does the Comtrol Rocketport card not have a major assigned?

[Adrian Bunk]

Perhaps it's a silly question but I'd like to know why it is the way it 
is:

The 2.2, 2.4 and 2.5 kernels include a driver for the Comtrol Rocketport 
card (drivers/char/dtlk.c) which uses a local major (it does a
  "register_chrdev(0, "dtlk", &dtlk_fops);
). Is there a reason why it doesn't have a fixed major assigned?

TIA
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

Re: Why does the Comtrol Rocketport card not have a major assigned?

[George G. Davis]

Adrian Bunk wrote:
> 
> Perhaps it's a silly question but I'd like to know why it is the way it
> is:
> 
> The 2.2, 2.4 and 2.5 kernels include a driver for the Comtrol Rocketport
> card (drivers/char/dtlk.c) which uses a local major (it does a
>   "register_chrdev(0, "dtlk", &dtlk_fops);
> ). Is there a reason why it doesn't have a fixed major assigned?

Huh?:

	dtlk.c - DoubleTalk PC driver for Linux

That doesn't look like the Comtrol Rocketport (drivers/char/rocket.c)
driver to me. : )

Meanwhile 2.4.19 Documentation/devices.txt shows:

 46 char        Comtrol Rocketport serial card
                  0 = /dev/ttyR0        First Rocketport port
                  1 = /dev/ttyR1        Second Rocketport port
                    ...

--
Regards,
George

> TIA
> Adrian
> 
> --
> 
>        "Is there not promise of rain?" Ling Tan asked suddenly out
>         of the darkness. There had been need of rain for many days.
>        "Only a promise," Lao Er said.
>                                        Pearl S. Buck - Dragon Seed
> 
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Why does the _DoubleTalk card_ not have a major assigned?

[Adrian Bunk]

On Wed, Dec 04, 2002 at 04:16:52PM -0500, George G. Davis wrote:
> Adrian Bunk wrote:
> > Perhaps it's a silly question but I'd like to know why it is the way it
> > is:
> > 
> > The 2.2, 2.4 and 2.5 kernels include a driver for the Comtrol Rocketport
> > card (drivers/char/dtlk.c) which uses a local major (it does a
> >   "register_chrdev(0, "dtlk", &dtlk_fops);
> > ). Is there a reason why it doesn't have a fixed major assigned?
> 
> Huh?:
> 
> 	dtlk.c - DoubleTalk PC driver for Linux
> 
> That doesn't look like the Comtrol Rocketport (drivers/char/rocket.c)
> driver to me. : )

I was thinking about something else related to the Comtrol Rocketport 
when writing my mail, and I mixed the two things...  :-(

Please do a s/Comtrol Rocketport/DoubleTalk/g in my initial mail.

> Meanwhile 2.4.19 Documentation/devices.txt shows:
> 
>  46 char        Comtrol Rocketport serial card
>                   0 = /dev/ttyR0        First Rocketport port
>                   1 = /dev/ttyR1        Second Rocketport port
>                     ...

This is indeed true for the Comtrol Rocketport card but there's no
major for the DoubleTalk card (and this is the card I wanted to write
about).

> Regards,
> George

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

Re: Why does the _DoubleTalk card_ not have a major assigned?

[Nicolas Pitre]

On Wed, 4 Dec 2002, Adrian Bunk wrote:

> This is indeed true for the Comtrol Rocketport card but there's no
> major for the DoubleTalk card (and this is the card I wanted to write
> about).

Maybe because it doesn't need a static major?  For funky hardware like the
Doubletalk for which the number of Linux users worldwide can probably be
counted on your fingers you can just grep /proc/devices for its allocated
major and create the /dev node on the fly.


Nicolas

Re: Why does the _DoubleTalk card_ not have a major assigned?

[Adrian Bunk]

On Wed, Dec 04, 2002 at 04:50:50PM -0500, Nicolas Pitre wrote:
> On Wed, 4 Dec 2002, Adrian Bunk wrote:
> 
> > This is indeed true for the Comtrol Rocketport card but there's no
> > major for the DoubleTalk card (and this is the card I wanted to write
> > about).
> 
> Maybe because it doesn't need a static major?  For funky hardware like the
> Doubletalk for which the number of Linux users worldwide can probably be
> counted on your fingers you can just grep /proc/devices for its allocated
> major and create the /dev node on the fly.

Thanks for your answer, I knew that this might have been a silly
question (and my confusing first mail didn't make it better...).

> Nicolas

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed