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@intel.com>

diff --git a/drivers/dma/ioat/registers.h b/drivers/dma/ioat/registers.h
index 63038e1..f015ec1 100644 (file)
--- 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 */