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Re: [PATCH] MIPS: loongson: fix random early boot hang

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH] MIPS: loongson: fix random early boot hang
From: Aaro Koskinen <aaro.koskinen@iki.fi>
Date: Wed, 15 May 2013 21:27:34 +0300
Cc: linux-mips@linux-mips.org
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Hi,

On Wed, Mar 13, 2013 at 02:41:37PM +0100, Ralf Baechle wrote:
> On Tue, Feb 19, 2013 at 02:00:39AM +0200, Aaro Koskinen wrote:
> > Subject: [PATCH] MIPS: loongson: fix random early boot hang
> > 
> > Some Loongson boards (e.g. Lemote FuLoong mini-PC) use ISA/southbridge
> > device (CS5536 general purpose timer) for the timer interrupt. It starts
> > running early and is already enabled during the PCI configuration,
> > during which there is a small window in pci_read_base() when the register
> > access is temporarily disabled. If the timer interrupts at this point,
> > the system will hang. Fix this by adding a fixup that keeps the register
> > access always enabled.
> 
> Applied, though a bit late.  I really was hoping for one of the Lemote
> folks to chime in.

I wonder if this patch is going to the mainline kernel? I don't see it
in 3.10-rc1...

A.

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