> I explicitly check for ret < 0. If there's no PHY driver module for
> a specific PHY ID then the return code would be > 0.
> My understanding of request_module() is that a return code < 0
> is returned if something bad happens in modprobe() call as such.
Ah, O.K. I was expecting an ENODEV or similar if there was no module
to load.
I wonder if this depends on the user space implementation? busybox
might do something different to udev?
Maybe add a comment about the expectation that no error is given when
the module does not exist.
Andrew
