Lars,
Here's the reworked code per your comment. Let me know if this matches
what you are thinking. Patch 2/4 shows how the driver provides the
error, and patch 3,4/4 show how the errors are received by upper layer.
The callback is an addition so people should be able to transition
to the new one when convenient and the old callback still remains for
compatibility. We should be able to expand on the new callback as
needed since I don't know much about the slave DMA side of things. If
you are ok with it I'll clean it up and add the proper comments/docs
etc and resubmit.
---
Dave Jiang (4):
RFC: dmaengine: Add error reporting infrastructure
RFC: dmaengine: ioatdma: Add error handling to ioat driver
RFC: ntb: add DMA error handling for TX DMA
RFC: ntb: add DMA error handling for RX DMA
drivers/dma/ioat/dma.c | 155 +++++++++++++++++++++++++----
drivers/dma/ioat/registers.h | 2
drivers/ntb/ntb_transport.c | 228 ++++++++++++++++++++++++++++++++----------
include/linux/dmaengine.h | 16 +++
4 files changed, 326 insertions(+), 75 deletions(-)
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