linux-kernel - RE: [PATCH V1] arm: tegra: dma: not required to move requestor when stopping.

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Date:	Tue, 24 Jan 2012 12:57:21 -0800
From:	Stephen Warren <swarren@...dia.com>
To:	Laxman Dewangan <ldewangan@...dia.com>,
	"ccross@...roid.com" <ccross@...roid.com>,
	"olof@...om.net" <olof@...om.net>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>
CC:	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH V1] arm: tegra: dma: not required to move requestor when
 stopping.

Laxman Dewangan wrote at Tuesday, January 24, 2012 1:11 AM:
> It is not require to move the requestor of dma to INVALID
> option before stopping dma.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>

Acked-by: Stephen Warren <swarren@...dia.com>
Tested-by: Stephen Warren <swarren@...dia.com>

I know that Laxman has checked with the HW engineers, and they see no
reason to do this. I was originally worried about hung FIFOs preventing
an in-progress DMA from completely without the removed code, but according
to HW, that isn't a concern.

-- 
nvpublic

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