linux-kernel - Re: [PATCH v3 01/21 resend] serial: rewrite pxa2xx-uart to use 8250

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Message-ID: <20131219110502.GC20686@xps8300>
Date:	Thu, 19 Dec 2013 13:05:02 +0200
From:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:	Sergei Ianovich <ynvich@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Russell King <linux@....linux.org.uk>,
	Jiri Slaby <jslaby@...e.cz>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	James Cameron <quozl@...top.org>, Zhou Zhu <zzhu3@...vell.com>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Arnd Bergmann <arnd@...db.de>,
	"open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
	"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 01/21 resend] serial: rewrite pxa2xx-uart to use
 8250_core

On Thu, Dec 19, 2013 at 02:01:36PM +0400, Sergei Ianovich wrote:
> On Thu, 2013-12-19 at 13:35 +0400, Sergei Ianovich wrote:
> > On Thu, 2013-12-19 at 10:51 +0200, Heikki Krogerus wrote:
> > > I noticed one more thing. I'm sorry about commenting this late.
> > > 
> > > Since you set the type PORT_XSCALE, don's you want to use
> > > UPF_FIXED_TYPE flag instead of the UPF_SKIP_TEST here? Otherwise the
> > > type will just get overridden and autoconfig() will be executed.
> > 
> > UPF_FIXED_PORT was my first guess. However, it didn't work.
> > 
> > I've also tried to do ioremap in serial_pxa_probe instead of using
> > UPF_IOREMAP. This didn't work as well.
> 
> I didn't clarify properly.
> 
> UPF_SKIP_TEST skips only the loopback test. This test could work on PXA,
> but requires PXA-specific pre-initialization. There are more test after
> the loopback one, which will fail if we are not on PXA. So I decided
> that skipping it is easier than tricky rewriting of autoconfig().

OK. So there is no problem here. Sorry about the noise.

Thanks,

-- 
heikki
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