linux-kernel - [PATCHv2 07/10] dw_dmac: disable BLOCK interrupts

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Date:	Tue, 19 Jun 2012 13:34:07 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
Cc:	Viresh Kumar <viresh.linux@...il.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCHv2 07/10] dw_dmac: disable BLOCK interrupts

Just to be sure we are in known state we disable the BLOCK interupts.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/dma/dw_dmac.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 23a409b..42cffe8 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1439,6 +1439,9 @@ static int __init dw_probe(struct platform_device *pdev)
 	/* force dma off, just in case */
 	dw_dma_off(dw);
 
+	/* disable BLOCK interrupts as well */
+	channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask);
+
 	err = request_irq(irq, dw_dma_interrupt, 0, "dw_dmac", dw);
 	if (err)
 		goto err_irq;
@@ -1478,6 +1481,7 @@ static int __init dw_probe(struct platform_device *pdev)
 
 	/* Clear all interrupts on all channels. */
 	dma_writel(dw, CLEAR.XFER, dw->all_chan_mask);
+	dma_writel(dw, CLEAR.BLOCK, dw->all_chan_mask);
 	dma_writel(dw, CLEAR.SRC_TRAN, dw->all_chan_mask);
 	dma_writel(dw, CLEAR.DST_TRAN, dw->all_chan_mask);
 	dma_writel(dw, CLEAR.ERROR, dw->all_chan_mask);
-- 
1.7.10

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