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ioat2,3: disable asynchronous error notifications

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

Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Dan Williams 2009-11-19 17:07:57 -07:00
commit 6f82b83b7a
1 changed files with 1 additions and 3 deletions
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4
drivers/dma/ioat/registers.h
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@ -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 */