From: Vinod Koul <vinod.koul@intel.com>
To: "Bounine, Alexandre" <Alexandre.Bounine@idt.com>
Cc: Russell King <rmk@arm.linux.org.uk>,
dan.j.williams@intel.com, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org,
Jassi Brar <jaswinder.singh@linaro.org>,
Kumar Gala <galak@kernel.crashing.org>,
Matt Porter <mporter@kernel.crashing.org>,
Li Yang <leoli@freescale.com>
Subject: RE: [PATCH 01/11] dmaengine: add context parameter toprep_slave_sgand prep_dma_cyclic
Date: Tue, 07 Feb 2012 19:44:17 +0530 [thread overview]
Message-ID: <1328624057.26182.144.camel@vkoul-udesk3> (raw)
In-Reply-To: <0CE8B6BE3C4AD74AB97D9D29BD24E552028C2A5D@CORPEXCH1.na.ads.idt.com>
On Tue, 2012-02-07 at 06:01 -0800, Bounine, Alexandre wrote:
> Currently function private_candidate() allows filtering function
> not to be specified and therefore skip the filter check.
> It may be a good safety measure to ensure that channels specified
> as DMA_SLAVE_EXT provide a corresponding filter routine so they
> positively identify dma channel that will accept intended extra
> parameter.
> I assume that a system may have more than one dmac registered as
> DMA_SLAVE_EXT.
>
> This is what I have for RapidIO - the filter call ensures that DMA
> channel is associated with a RapidIO controller that provides access
> to the specified SRIO device.
For slave-dma it's better to have a filter :)
--
~Vinod
next prev parent reply other threads:[~2012-02-07 14:13 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-02 21:32 [PATCH 00/11] dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic Alexandre Bounine
2012-02-02 21:32 ` [PATCH 01/11] " Alexandre Bounine
2012-02-02 21:43 ` Russell King
2012-02-03 15:31 ` [PATCH 01/11] dmaengine: add context parameter toprep_slave_sg " Bounine, Alexandre
2012-02-06 11:53 ` Vinod Koul
2012-02-06 15:04 ` Bounine, Alexandre
2012-02-06 15:28 ` Vinod Koul
2012-02-06 15:53 ` Russell King
2012-02-06 17:02 ` [PATCH 01/11] dmaengine: add context parameter toprep_slave_sgand prep_dma_cyclic Bounine, Alexandre
2012-02-06 18:07 ` Vinod Koul
2012-02-06 18:45 ` Bounine, Alexandre
2012-02-07 3:39 ` Vinod Koul
2012-02-07 14:01 ` Bounine, Alexandre
2012-02-07 14:14 ` Vinod Koul [this message]
2012-02-07 14:19 ` Bounine, Alexandre
2012-02-06 18:04 ` [PATCH 01/11] dmaengine: add context parameter toprep_slave_sg and prep_dma_cyclic Vinod Koul
2012-02-06 15:56 ` Bounine, Alexandre
2012-02-06 16:16 ` Russell King
2012-02-02 21:32 ` [PATCH 02/11] dmaengine/drivers: add context parameter for DMA_SLAVE and DMA_CYCLIC Alexandre Bounine
2012-02-02 21:32 ` [PATCH 03/11] plat-samsung: " Alexandre Bounine
2012-02-02 21:32 ` [PATCH 04/11] media/video: add new context parameter for DMA_SLAVE calls Alexandre Bounine
2012-02-02 21:32 ` [PATCH 05/11] mmc/host: add context parameter for DMA_SLAVE and DMA_CYCLIC Alexandre Bounine
2012-02-03 9:20 ` Ulf Hansson
2012-02-03 16:52 ` Bounine, Alexandre
2012-02-03 17:01 ` Russell King
2012-02-03 18:36 ` [PATCH 05/11] mmc/host: add context parameter for DMA_SLAVEand DMA_CYCLIC Bounine, Alexandre
2012-02-02 21:32 ` [PATCH 06/11] nand/gpmi: add context parameter to prep_slave_sg calls Alexandre Bounine
2012-02-02 22:13 ` Marek Vasut
2012-02-03 16:35 ` Bounine, Alexandre
2012-02-02 21:32 ` [PATCH 07/11] net/ks8842: add context parameter to prep_slave_sg call Alexandre Bounine
2012-02-02 21:32 ` [PATCH 08/11] spi/serial: add context parameter for DMA_SLAVE and DMA_CYCLIC Alexandre Bounine
2012-02-02 21:32 ` [PATCH 09/11] usb/musb: add context parameter to prep_slave_sg call Alexandre Bounine
2012-02-02 21:32 ` [PATCH 10/11] usb/renesas: " Alexandre Bounine
2012-02-02 21:32 ` [PATCH 11/11] sound/soc: add context parameter to prep_slave_sg and prep_dma_cyclic calls Alexandre Bounine
2012-02-02 22:22 ` Mark Brown
2012-02-03 16:41 ` Bounine, Alexandre
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