Why does the Comtrol Rocketport card not have a major assigned?
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
Signature · 4 lines
"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 SeedQuoted 8 lines · 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?
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
Quoted 15 lines
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?
Quoted 9 lines · George G. Davis
Quoted 7 lines · 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?
Quoted 6 lines
Huh?:
dtlk.c- DoubleTalk PC driver for LinuxThat 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.
Quoted 6 lines
Meanwhile 2.4.19
Documentation/devices.txtshows:46 char Comtrol Rocketport serial card
0 =/dev/ttyR0First Rocketport port
1 =/dev/ttyR1Second 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).
Quoted 2 lines
Regards,
George
cu
Adrian
Signature · 4 lines
"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 SeedRe: Why does the _DoubleTalk card_ not have a major assigned?
Quoted 3 lines · Adrian Bunk
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?
Quoted 10 lines · Nicolas Pitre
Quoted 3 lines · Adrian Bunk
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/devicesfor 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...).
Quoted 1 line
Nicolas
cu
Adrian
Signature · 4 lines
"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