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Date: Thu, 3 Mar 2016 21:03:23 +0530
From: Vinod Koul <vinod.koul@...el.com>
To: Kedareswara rao Appana <appana.durga.rao@...inx.com>
Cc: dan.j.williams@...el.com, michal.simek@...inx.com,
soren.brinkmann@...inx.com, appanad@...inx.com,
moritz.fischer@...us.com, laurent.pinchart@...asonboard.com,
luis@...ethencourt.com, anirudh@...inx.com,
dmaengine@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/4] dmaengine: xilinx_vdma: Improve SG engine handling
On Fri, Feb 26, 2016 at 07:33:51PM +0530, Kedareswara rao Appana wrote:
> The current driver allows user to queue up multiple segments
> on to a single transaction descriptor. User will submit this single desc
> and in the issue_pending() we decode multiple segments and submit to SG HW engine.
> We free up the allocated_desc when it is submitted to the HW.
>
> Existing code prevents the user to prepare multiple trasactions at same time as
> we are overwrite with the allocated_desc.
>
> The best utilization of HW SG engine would happen if we collate the pending
> list when we start dma this patch updates the same.
Applied all. It is usually advisable to do cover letter using --cover-letter
for multi patch series
--
~Vinod
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