Re: [PATCH v2] serial: Poll USB devices if usbX serial port is missing

[Joonas Lahtinen <joonas.lahtinen@linux.intel.com>]

On pe, 2016-11-18 at 15:21 +0300, Andrei Borzenkov wrote:
> On Fri, Nov 18, 2016 at 1:36 PM, Joonas Lahtinen
> > 
> > v2:
> > - Use grub_term_poll_usb to avoid module dependency (Andrei)
> > 
> 
> Hmm ... note that terminal_input/terminal_output also auto-load
> modules that handle serial ports. So this still will not be
> equivalent, it will require user to manually pre-load USB. Did you
> actually test this version of patch? Do you pre-load USB modules
> somewhere?

Nope, I took your word literally and just changed the function.
Assuming it's a rather direct replacement. Excuse for that.

> 
> The problem is, infrastructure to handle auto-load lists currently
> belongs to normal mode, while serial may sensibly be used before
> normal is loaded. Not sure what we can do here.

I think this is getting more important when we're seeing increasing
amount of devices without even an internal serial port.

Sounds to me like pulling the auto-loading out of just normal mode
would make sense?

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation