Re: lanana: Add major/minor entries for PPC QE UART devices

From: Segher Boessenkool
Date: Thu Mar 01 2007 - 11:44:26 EST


- Cap the driver at 4 UARTs;

Let's do this, but design the code to
allow more by just changing a #define.

Just randomly using some extra minors that aren't
assigned to you isn't such a great idea.

Maybe for a desktop or generic server where
you don't know what's going to be configured,
but it's not unusual to do so with custom
embedded systems.

You can do whatever you want in your own stuff
but that's not how things work in the mainstream
Linux kernel.

The small experimental
or user allocations often don't cover what
is needed, so we just grab some allocation
from a device that isn't ever going to be
used on the system.

Sure I've done that myself a few times, but this
just doesn't fly for in-kernel drivers; those have
their own ranges defined in devices.txt and don't
use random other minors.


Segher

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