Re: USB output in ucom

[Emmanuel Dreyfus <manu%netbsd.org@localhost>]

On Sun, Jul 13, 2025 at 01:59:18PM +0200, Michael van Elst wrote:
> usbd_setup_xfer() however rewrites the flags, so
> it needs USBD_SYNCHRONOUS while usbd_create_xfer
> probably doesn't.

I had great success outputing stuff in ucom_attach(), however using
it for console output works only for the first character (which is '[').

I understand kprintf operates at IPL_HIGH, while the USB subssytem
processes I/O at IPL_SOFTCLOCK. Does that mean I just cannot rely 
on USB for console output?


-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost