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Re: [PATCH] MIPS: Alchemy: db1200: remove custom wait implementation

To: Manuel Lauss <>
Subject: Re: [PATCH] MIPS: Alchemy: db1200: remove custom wait implementation
From: Ralf Baechle <>
Date: Wed, 7 Apr 2010 16:34:56 +0100
Cc: Linux-MIPS <>, Manuel Lauss <>
In-reply-to: <>
Original-recipient: rfc822;
References: <>
User-agent: Mutt/1.5.20 (2009-08-17)
On Sat, Apr 03, 2010 at 05:07:03PM +0200, Manuel Lauss wrote:

> While playing with the out-of-tree MAE driver module, the system
> would panic after a while in the db1200 custom wait code after
> wakeup due to a clobbered k0 register being used as target address
> of a store op.
> Remove the custom wait implementation and revert back to the
> Alchemy-recommended implementation already set as default.
> Signed-off-by: Manuel Lauss <>
> ---
> I've played a few hours worth of video from a SD card now without
> a hitch; usually the panic would occur after ~10 minutes.
> Please add this to the 2.6.34 queue, Thanks!

Yes, this use of k0 was definately looking fishy - and I'm not talking
about the kind of fish in a bouillabaisse ;-)

Applied.  Thanks!


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