From: Ralf Baechle <ralf@linux-mips.org>
To: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Subject: Re: [PATCH] MIPS: loongson: fix random early boot hang
Date: Wed, 13 Mar 2013 14:41:37 +0100 [thread overview]
Message-ID: <20130313134137.GB17165@linux-mips.org> (raw)
In-Reply-To: <1361232039-12555-1-git-send-email-aaro.koskinen@iki.fi>
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.
Thanks Aaro,
Ralf
next prev parent reply other threads:[~2013-03-13 13:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-19 0:00 [PATCH] MIPS: loongson: fix random early boot hang Aaro Koskinen
2013-03-13 13:41 ` Ralf Baechle [this message]
2013-05-15 18:27 ` Aaro Koskinen
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