[PATCH V4 0/3] dmaengine: qcom_hidma: add error reporting
Vinod Koul
vinod.koul at intel.com
Wed Aug 31 08:58:07 PDT 2016
On Wed, Aug 31, 2016 at 11:10:26AM -0400, Sinan Kaya wrote:
> Three changes in the error handling area:
>
> 1. There is a race condition between data transfer callback and descriptor
> free code. The callback routine may decide to clear the resources even
> though the descriptor has not yet been freed.
>
> 2. DMA Engine framework now supports direct error reporting to the client
> via the callback.
>
> Pass the DMA errors to the client by passing a result argument. The HW
> only supports a generic error when something goes wrong. That's why,
> using DMA_TRANS_ABORTED all the time.
>
> 3. The HIDMA driver is capable of error detection. However, the error was
> not being passed back to the client when tx_status API is called.
Applied all, thanks
--
~Vinod
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