linux-kernel - Re: [PATCH 2/2] serial: 8250: Request full 16550A feature probing for OxSemi PCIe devices

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Message-ID: <alpine.DEB.2.21.2209190918450.14808@angie.orcam.me.uk>
Date:   Mon, 19 Sep 2022 09:23:05 +0100 (BST)
From:   "Maciej W. Rozycki" <macro@...am.me.uk>
To:     Jiri Slaby <jirislaby@...nel.org>
cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Josh Triplett <josh@...htriplett.org>,
        Anders Blomdell <anders.blomdell@...trol.lth.se>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH 2/2] serial: 8250: Request full 16550A feature probing
 for OxSemi PCIe devices

On Mon, 19 Sep 2022, Jiri Slaby wrote:

> > linux-serial-8250-oxsemi-efr.diff
> > Index: linux-macro/drivers/tty/serial/8250/8250_pci.c
> > ===================================================================
> > --- linux-macro.orig/drivers/tty/serial/8250/8250_pci.c
> > +++ linux-macro/drivers/tty/serial/8250/8250_pci.c
> > @@ -1232,6 +1232,10 @@ static void pci_oxsemi_tornado_set_mctrl
> >   	serial8250_do_set_mctrl(port, mctrl);
> >   }
> >   +/*
> > + * We require EFR features for clock programming, so set UPF_FULL_PROBE
> > + * for full probing regardless of CONFIG_SERIAL_8250_16550A_VARIANTS
> > setting.
> > + */
> 
> It'd make more sense to me to move this comment right before the line you add
> below.

 I favour the style where what a function does is documented above it, but 
I won't insist on it if having a comment within is what we prefer here.

  Maciej