linux-kernel - [PATCH 1/4 v6] dmaengine: add async_tx_clear

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Message-ID: <Pine.LNX.4.64.0812261720240.4895@axis700.grange>
Date:	Fri, 26 Dec 2008 18:11:18 +0100 (CET)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	linux-kernel@...r.kernel.org
cc:	linux-fbdev-devel@...ts.sourceforge.net, adaplas@...il.com,
	Sascha Hauer <s.hauer@...gutronix.de>,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	Dan Williams <dan.j.williams@...el.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH 1/4 v6] dmaengine: add async_tx_clear_ack() macro

From: Guennadi Liakhovetski <lg@...x.de>

To complete the DMA_CTRL_ACK handling API add a async_tx_clear_ack() macro.

Signed-off-by: Guennadi Liakhovetski <lg@...x.de>
---

No change since v2

 include/linux/dmaengine.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 64dea2a..c820a3f 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -287,6 +287,11 @@ static inline void async_tx_ack(struct dma_async_tx_descriptor *tx)
 	tx->flags |= DMA_CTRL_ACK;
 }
 
+static inline void async_tx_clear_ack(struct dma_async_tx_descriptor *tx)
+{
+	tx->flags &= ~DMA_CTRL_ACK;
+}
+
 static inline bool async_tx_test_ack(struct dma_async_tx_descriptor *tx)
 {
 	return (tx->flags & DMA_CTRL_ACK) == DMA_CTRL_ACK;
-- 
1.5.4

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