linux-kernel - Re: [PATCH 2/3] define ARM-specific dma_coherent_write

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Message-Id: <026571E7-67F6-4B0F-998C-2A845AA22E59@jonmasters.org>
Date:	Sun, 2 Oct 2011 21:40:19 -0400
From:	Jon Masters <jonathan@...masters.org>
To:	Mark Salter <msalter@...hat.com>
Cc:	Catalin Marinas <catalin.marinas@....com>, ming.lei@...onical.com,
	stern@...land.harvard.edu, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/3] define ARM-specific dma_coherent_write_sync

On Sep 6, 2011, at 11:02 AM, Mark Salter wrote:
> 
> In any case, the current thinking is that the original problem with
> the USB performance seen on cortex A9 multicore is probably something
> more than just write buffer delays. Once the original problem is better
> understood, we can take another look at this patch if it is still
> needed.


Thanks again for looking into this Mark. My understanding is that this is still being investigated. I'll followup with ARM to see how that's going since I've heard nothing recently :) Meanwhile, we're continuing to carry a hack based on these patches in Fedora ARM kernels.

Jon.

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