From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Jeffy Chen <jeffy.chen@rock-chips.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Brian Norris" <briannorris@chromium.org>,
"Douglas Anderson" <dianders@chromium.org>,
"Peter Hurley" <peter@hurleysoftware.com>,
"Sören Brinkmann" <soren.brinkmann@xilinx.com>,
"Michal Simek" <michal.simek@xilinx.com>,
"Marc Gonzalez" <marc_gonzalez@sigmadesigns.com>,
"Jiri Slaby" <jslaby@suse.com>,
"Vineet Gupta" <vgupta@synopsys.com>,
"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
linux-snps-arc@lists.infradead.org,
"linux-arm Mailing List" <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 0/5] earlycon hang under some conditions
Date: Sun, 30 Jul 2017 17:31:03 +0300 [thread overview]
Message-ID: <CAHp75VdHqD67jcoaQ5EwdTVdoyLNF0DCTQDvTxWikiaOnPs75g@mail.gmail.com> (raw)
In-Reply-To: <1500357778-23169-1-git-send-email-jeffy.chen@rock-chips.com>
On Tue, Jul 18, 2017 at 9:02 AM, Jeffy Chen <jeffy.chen@rock-chips.com> wrote:
> I was testing earlycon with 8250 dw serial console. And it hangs in
> these cases:
> 1/ kernel hang when calling early write function after free_initmem:
> a) the earlycon not disabled after the init code(due to keep_bootcon or
> not specify a real console to switch to)
> b) the early write func is marked as __init, for example 8250_early.
> This serial fix 1/ case only.
Here is another opinion.
I can tell that conditions to get into the trouble are quite unusual or rare.
Any rationale behind why one needs such a combination of parameters?
P.S. For doulble output ask Sergey and Petr (they are quite concerned
about it). Actually strange I didn't see their names in Cc list for
console related stuff,
--
With Best Regards,
Andy Shevchenko
prev parent reply other threads:[~2017-07-30 14:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-18 6:02 [PATCH 0/5] earlycon hang under some conditions Jeffy Chen
2017-07-18 6:02 ` [PATCH 1/5] serial: arc: Remove __init marking from early write Jeffy Chen
2017-07-18 6:02 ` [PATCH 2/5] serial: omap: " Jeffy Chen
2017-07-18 6:02 ` [PATCH 3/5] serial: xuartps: " Jeffy Chen
2017-07-18 6:02 ` [PATCH 4/5] serial: 8250_ingenic: " Jeffy Chen
2017-07-18 6:02 ` [PATCH 5/5] serial: 8250_early: " Jeffy Chen
2017-07-18 17:51 ` [PATCH 0/5] earlycon hang under some conditions Brian Norris
2017-07-18 21:17 ` Doug Anderson
2017-07-24 23:50 ` Doug Anderson
2017-07-30 14:31 ` Andy Shevchenko [this message]
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