[PATCH] serial: pmac_zilog: don't init if zilog is not available

[Finn Thain]

On Thu, 22 Oct 2020, Geert Uytterhoeven wrote:

> 
> Thanks for your patch...
> 

You're welcome.

> I can't say I'm a fan of this...
> 

Sorry.

> 
> The real issue is this "extern struct platform_device scc_a_pdev, 
> scc_b_pdev", circumventing the driver framework.
> 
> Can we get rid of that?
> 

Is there a better alternative?

pmz_probe() is called by console_initcall(pmz_console_init) when 
CONFIG_SERIAL_PMACZILOG_CONSOLE=y because this has to happen earlier than 
the normal platform bus probing which takes place later as a typical 
module_initcall.