Messages in this thread | | | Date | Wed, 8 May 2013 09:36:13 -0700 | From | Greg KH <> | Subject | Re: [RFC 1/8] serial:st-asc: Add ST ASC driver. |
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On Wed, May 08, 2013 at 06:31:48PM +0200, Arnd Bergmann wrote: > 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?
It "should", as the major/minor registration should only happen when the hardware is found, but I haven't tested it out, so I can't say for sure.
> 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.
We can always fix this if needed :)
thanks,
greg k-h
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