From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Wright <chrisw@sous-sol.org>
Subject: Re: [PATCH net-2.6] jme: Fix unmap error (Causing system
	freeze)
Date: Thu, 21 Jul 2011 12:30:08 -0700
Message-ID: <20110721193008.GC9766@sequoia.sous-sol.org>
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Cc: Jason Lamb <jason@lambhome.org>, linux-netdev <netdev@vger.kernel.org>,
        Jason Long <jason@octgsoftware.com>, stable@kernel.org,
        Marcus Becker <marcus.disi@gmail.com>,
        Aries Lee <arieslee@jmicron.com>, Devinchiu <devinchiu@jmicron.com>,
        Marc Schiffbauer <mschiff@gentoo.org>,
        David Miller <davem@davemloft.net>
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* cooldavid@cooldavid.org (cooldavid@cooldavid.org) wrote:
> From: Guo-Fu Tseng <cooldavid@cooldavid.org>
> 
> This patch add the missing dma_unmap().
> Which solved the critical issue of system freeze on heavy load.
> 
> Michal Miroslaw's rejected patch:
> [PATCH v2 10/46] net: jme: convert to generic DMA API
> Pointed out the issue also, thank you Michal.
> But the fix was incorrect. It would unmap needed address
> when low memory.
> 
> Got lots of feedback from End user and Gentoo Bugzilla.
> https://bugs.gentoo.org/show_bug.cgi?id=373109
> Thank you all. :)

Also referred to in kernel bugzilla:

https://bugzilla.kernel.org/show_bug.cgi?id=39312

> Cc: stable@kernel.org
> Signed-off-by: Guo-Fu Tseng <cooldavid@cooldavid.org>

Acked-by: Chris Wright <chrisw@sous-sol.org>

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