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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <74CDBE0F657A3D45AFBB94109FB122FF178CB81E5F@HQMAIL01.nvidia.com>
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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/