linux-kernel - [PATCH v3 2/2] dmaengine: omap-dma: Do not suppress interrupts for memcpy

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Date:	Tue, 5 Apr 2016 15:20:21 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	<vinod.koul@...el.com>, <linux@....linux.org.uk>
CC:	<dmaengine@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<nsekhar@...com>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v3 2/2] dmaengine: omap-dma: Do not suppress interrupts for memcpy

If the client queues up more transfers the driver will not able to move to
the next transfer without knowing that the previous descriptor is
completed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
 drivers/dma/omap-dma.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
index 6ea9044d8b71..1e984e18c126 100644
--- a/drivers/dma/omap-dma.c
+++ b/drivers/dma/omap-dma.c
@@ -955,9 +955,7 @@ static struct dma_async_tx_descriptor *omap_dma_prep_dma_memcpy(
 	d->ccr = c->ccr;
 	d->ccr |= CCR_DST_AMODE_POSTINC | CCR_SRC_AMODE_POSTINC;
 
-	d->cicr = CICR_DROP_IE;
-	if (tx_flags & DMA_PREP_INTERRUPT)
-		d->cicr |= CICR_FRAME_IE;
+	d->cicr = CICR_DROP_IE | CICR_FRAME_IE;
 
 	d->csdp = data_type;
 
-- 
2.8.0