Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [RFC 1/8] serial:st-asc: Add ST ASC driver. | Date | Wed, 8 May 2013 18:31:48 +0200 |
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On Wednesday 08 May 2013, Greg KH wrote: > > just mention there is not hardware reason to not use the generic ttySx > > in place of ttyAS as we have only one IP that handle serial on this > > family of SoC > > > > personally I'll switch to ttySx > > Great, then you can use the same major/minor range as well, so there's > no more objection from me about this :)
Does that work these days when you have kernel with multiple built-in uart drivers?
I think it would be good if all uarts were using the same name space and major/minor numbers, but I think the mess we currently have is the result of the tty_register_driver() interface reserving the device number range at driver load time, independent of the presence of devices. I would assume that normal distro kernels always ship with an 8250 driver built-in to allow using that as the console, and if I read the code correctly, that currently prevents another uart driver from registering the same major/minor numbers.
Arnd
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