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From: Daniel Mack <daniel@caiaq.de>
To: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Stanislav Brabec <utx@penguin.cz>,
	"Rafael J. Wysocki" <rjw@sisk.pl>, Eric <eric.y.miao@gmail.com>,
	Pavel Machek <pavel@ucw.cz>,
	dbaryshkov@gmail.com, Cyril Hrubis <metan@ucw.cz>,
	arminlitzel@web.de, gregkh@suse.de,
	Haojian Zhuang <haojian.zhuang@marvell.com>,
	kernel list <linux-kernel@vger.kernel.org>,
	dsaxena@laptop.org, lenz@cs.wisc.edu, rpurdie@rpsys.net,
	omegamoon@gmail.com, thommycheck@gmail.com, Dirk@opfer-online.de,
	linux-arm-kernel@lists.infradead.org, alan@linux.intel.com
Subject: Re: Possible suspend/resume regression in .32-rc?
Date: Wed, 13 Jan 2010 12:46:51 +0100	[thread overview]
Message-ID: <20100113114651.GJ8970@buzzloop.caiaq.de> (raw)
In-Reply-To: <771cded00911042106u39fd3655mae50a89bd419411b@mail.gmail.com>

On Thu, Nov 05, 2009 at 12:06:13AM -0500, Haojian Zhuang wrote:
> On Tue, Nov 3, 2009 at 4:50 AM, Stanislav Brabec <utx@penguin.cz> wrote:
> > Haojian Zhuang wrote:
> >> On Mon, Nov 2, 2009 at 5:57 AM, Stanislav Brabec <utx@penguin.cz> wrote:
> >> > Haojian Zhuang wrote:
> >> >
> >> >> Commit b5b82df6, from May 2007, breaks no_console_suspend on the OLPC
> >> >> XO laptop. Basically what happens is that upon returning from resume,
> >> >> serial8250_resume_port() will reconfigure the port for high speed
> >> >> mode and all console output will be garbled, making debug of the
> >> >> resume path painful. This patch modifies uart_resume_port() to
> >> >> reset the port to the state it was in before we suspended.
> >> >
> >> > See my patch waiting for approval in LKML thread
> >> > "serial-core: resume serial hardware with no_console_suspend".
> >> >
> >> > It attempts to fix it, but I was not yet able to test it due to spitz
> >> > resume breakage.
> >> >
> >>
> >> Hi Stanislav,
> >>
> >> At first, your patch can't be applied into my latest codebase. I have
> >> to update the patch. But the console resume is still blocked after
> >> applied your patch. It works only after I merge some old code back. My
> >> modified patch is in below.
> >
> > Yes, code changed there a bit. I sent rebased patch later in the thread.
> > Did you try this one? (Well I did not test it yet - in time of sending
> > resume did not work at all on my Zaurus.)
> >
> > Your patch is a bit different. I'll test both as soon as possible.
> >
> >
> 
> Your latest patch works well in my platform. Thanks a lot.

It seems Stanislav's patch is still unmerged in the current git HEAD.
Any idea why it is held back? I have it applied locally since quite a
while here, and it works well. So if it helps, take my Tested-by: for
it.

Daniel


  reply	other threads:[~2010-01-13 11:47 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20091031013427.GL14091@buzzloop.caiaq.de>
     [not found] ` <20091101205449.GT14091@buzzloop.caiaq.de>
2009-11-01 21:33   ` Possible suspend/resume regression in .32-rc? Pavel Machek
2009-11-01 22:03     ` Pavel Machek
2009-11-02  9:22       ` Haojian Zhuang
2009-11-02  9:29         ` Daniel Mack
2009-11-02  9:38         ` Pavel Machek
2009-11-02  9:54           ` Eric Miao
2009-11-02 10:48           ` Haojian Zhuang
2009-11-02 10:51             ` Pavel Machek
2009-11-02 11:18               ` Haojian Zhuang
2009-11-02 11:27                 ` Daniel Mack
2009-11-02 12:22                 ` Pavel Machek
2009-11-02  9:57         ` Stanislav Brabec
2009-11-03  3:31           ` Haojian Zhuang
2009-11-03  9:50             ` Stanislav Brabec
2009-11-05  5:06               ` Haojian Zhuang
2010-01-13 11:46                 ` Daniel Mack [this message]
2010-01-13 13:42                   ` Stanislav Brabec
2010-01-13 15:33                     ` Greg KH

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