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Message-ID: <20091120070629.13478.67985.stgit@dwillia2-linux.ch.intel.com>
Date:	Fri, 20 Nov 2009 00:06:29 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-raid@...r.kernel.org, maciej.sosnowski@...el.com
Subject: [PATCH 3/8] ioat2,3: disable asynchronous error notifications

Error interrupts and error completions may cause channel hangs, so
poll the channel status register after a timeout.

Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/dma/ioat/registers.h |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/ioat/registers.h b/drivers/dma/ioat/registers.h
index 63038e1..f015ec1 100644
--- a/drivers/dma/ioat/registers.h
+++ b/drivers/dma/ioat/registers.h
@@ -92,9 +92,7 @@
 #define IOAT_CHANCTRL_ERR_COMPLETION_EN		0x0004
 #define IOAT_CHANCTRL_INT_REARM			0x0001
 #define IOAT_CHANCTRL_RUN			(IOAT_CHANCTRL_INT_REARM |\
-						 IOAT_CHANCTRL_ERR_COMPLETION_EN |\
-						 IOAT_CHANCTRL_ANY_ERR_ABORT_EN |\
-						 IOAT_CHANCTRL_ERR_INT_EN)
+						 IOAT_CHANCTRL_ANY_ERR_ABORT_EN)
 
 #define IOAT_DMA_COMP_OFFSET			0x02	/* 16-bit DMA channel compatibility */
 #define IOAT_DMA_COMP_V1			0x0001	/* Compatibility with DMA version 1 */

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