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From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
To: linux-kernel@vger.kernel.org
Cc: Dan Williams <dan.j.williams@intel.com>, linux-sh@vger.kernel.org
Subject: [PATCH 3/3] dmaengine: clarify the meaning of the DMA_CTRL_ACK flag
Date: Thu, 10 Dec 2009 18:35:15 +0100 (CET)	[thread overview]
Message-ID: <Pine.LNX.4.64.0912101833520.4487@axis700.grange> (raw)
In-Reply-To: <Pine.LNX.4.64.0912101826010.4487@axis700.grange>

DMA_CTRL_ACK's description applies to its clear state, not to its set state.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
---
 include/linux/dmaengine.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 2b9f2ac..7878498 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -74,7 +74,7 @@ enum dma_transaction_type {
  *  control completion, and communicate status.
  * @DMA_PREP_INTERRUPT - trigger an interrupt (callback) upon completion of
  *  this transaction
- * @DMA_CTRL_ACK - the descriptor cannot be reused until the client
+ * @DMA_CTRL_ACK - if clear, the descriptor cannot be reused until the client
  *  acknowledges receipt, i.e. has has a chance to establish any dependency
  *  chains
  * @DMA_COMPL_SKIP_SRC_UNMAP - set to disable dma-unmapping the source buffer(s)
-- 
1.6.2.4


  parent reply	other threads:[~2009-12-10 17:35 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-10 17:35 [PATCH 0/3 v2] sh: fix dma driver Guennadi Liakhovetski
2009-12-10 17:35 ` [PATCH 1/3 v2] sh: stylistic improvements for the DMA driver Guennadi Liakhovetski
2009-12-10 17:35 ` [PATCH 2/3 v2] sh: fix DMA driver's descriptor chaining and cookie assignment Guennadi Liakhovetski
2009-12-11  8:02   ` Paul Mundt
2009-12-12  2:15     ` Nobuhiro Iwamatsu
2009-12-17  3:09       ` Nobuhiro Iwamatsu
2009-12-17  7:40         ` Guennadi Liakhovetski
2009-12-17  8:33           ` Nobuhiro Iwamatsu
2009-12-17  8:43             ` Guennadi Liakhovetski
2009-12-17 17:50               ` Dan Williams
2009-12-10 17:35 ` Guennadi Liakhovetski [this message]
2009-12-12  4:58 ` [PATCH 0/3 v2] sh: fix dma driver Dan Williams

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