Re: assignment of major number to serial driver -2.6.x kernels

[Jan Engelhardt]

>Hi All,
>
>  I would like to know whether the usage of 253 as major (device) number
>in serial port drivers is restricted in 2.6.x kernels.  I am asking this
>question, though the documentation tells the driver developers that 253
>is a reserved major number, 2.6.x Linux kernels can accommodate more
>than 255.

Majors 240 - 254 are reserved for private use, e.g. cooking@home; nothing to 
be seen in mainline drivers.
As for majors >255, you should at best try :) The dev number handling is
there - I am able to mknod blah c 1234 0.

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