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Re: [PATCH 2/2] MIPS: Alchemy: UARTs are 16550A

To: Manuel Lauss <manuel.lauss@googlemail.com>
Subject: Re: [PATCH 2/2] MIPS: Alchemy: UARTs are 16550A
From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 28 Oct 2009 12:52:03 -0700
Cc: Ralf Baechle <ralf@linux-mips.org>, Linux-MIPS <linux-mips@linux-mips.org>, linux-serial@vger.kernel.org, Manuel Lauss <manuel.lauss@gmail.com>
In-reply-to: <f861ec6f0910281227t455a6f5cw9e492a9a1fc1b07e@mail.gmail.com>
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References: <1256756954-29211-1-git-send-email-manuel.lauss@gmail.com> <1256756954-29211-2-git-send-email-manuel.lauss@gmail.com> <20091028122430.f7670ae2.akpm@linux-foundation.org> <f861ec6f0910281227t455a6f5cw9e492a9a1fc1b07e@mail.gmail.com>
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On Wed, 28 Oct 2009 20:27:16 +0100
Manuel Lauss <manuel.lauss@googlemail.com> wrote:

> On Wed, Oct 28, 2009 at 8:24 PM, Andrew Morton 
> <akpm@linux-foundation.org>wrote:
> 
> > On Wed, 28 Oct 2009 20:09:14 +0100
> > Manuel Lauss <manuel.lauss@googlemail.com> wrote:
> >
> > > UART autodetection breaks on the Au1300 but the IP blocks are
> > > identical, at least in the datasheets.
> > >
> > > Pass uart type on to the 8250 driver via platform data, and move
> > > the MSR quirk to another place sind autoconf() is now no longer
> > > called on init.
> > >
> > > Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
> > > ---
> > > Tested on DB1200 and DB1300.
> > > The mips parts apply on top of Ralf's mips-queue tree.
> > >
> > >  arch/mips/alchemy/common/platform.c |    4 +++-
> > >  drivers/serial/8250.c               |   13 +++++++------
> > >  2 files changed, 10 insertions(+), 7 deletions(-)
> > >
> > > diff --git a/arch/mips/alchemy/common/platform.c
> > b/arch/mips/alchemy/common/platform.c
> > > index 195e5b3..3be14b0 100644
> > > --- a/arch/mips/alchemy/common/platform.c
> > > +++ b/arch/mips/alchemy/common/platform.c
> > > @@ -26,7 +26,9 @@
> > >               .irq            = _irq,                         \
> > >               .regshift       = 2,                            \
> > >               .iotype         = UPIO_AU,                      \
> > > -             .flags          = UPF_SKIP_TEST | UPF_IOREMAP   \
> > > +             .flags          = UPF_SKIP_TEST | UPF_IOREMAP | \
> > > +                               UPF_FIXED_TYPE,               \
> > > +             .type           = PORT_16550A,                  \
> > >       }
> >
> > The kernel which you patched differs from current mainline here.
> 
> 
>  I know, that's why I added "The mips parts apply on top of Ralf's
> mips-queue tree" below
> the patch description.

If that's the case then Ralf's mips-queue tree isn't in linux-next :(

> If it makes it easier to apply, I could split this one in a mips and in a
> 8250 patch?

That's a hard call without knowing what's going on in mipsworld.  If
these patches applied to current mainline we could do it all as one
patch and, with suitable acks, slap it into 2.6.32.

Are these fixes also appropriate to 2.6.31.x and earlier?  If so,
that's another reason to prepare the patches against current mainline
and just trample over the mips devel queue.


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