Re: [PATCH] serial: 8250: clear stuck RX-timeout interrupt on LPC32xx (PORT_LPC3220)

On Fri, Jul 17, 2026 at 20:54:02 +0300, Andy Shevchenko wrote:
> > +      * Same bug worked around for other 8250 cores (8250_dw, 8250_omap, 8250_bcm7271).
>
> This is 8250-port.c.
>
> > +   if (port->type == PORT_LPC3220 &&
>
> Why do we have this then?

dw/omap/bcm7271 handle their variants of this in their
own drivers. LPC32xx (PORT_LPC3220) has no dedicated 8250 glue driver.
  
I gated it on port->type because LPC32xx is the only hardware I can test
on, and I wanted to avoid changing behaviour on 8250 variants I can't
verify. That said, the read only fires on a bogus IIR=RX_TIMEOUT with LSR.DR
clear, which a healthy 16550 never reports, so it's harmless on other
parts. Unless you object, I'll drop the PORT_LPC3220 gate to allow for generic
handling.