On 07/14/2016 11:56 PM, Dave Jiang wrote:
> Adding dmaengine core helper function in order to prep for error
> reporting.
>
> Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
> ---
> include/linux/dmaengine.h | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
> index 30de019..b601f23 100644
> --- a/include/linux/dmaengine.h
> +++ b/include/linux/dmaengine.h
This should go into drivers/linux/dmaengine.h. These functions are not part
of the consumer API and should only be used by the provider drivers.
> @@ -1372,6 +1372,26 @@ static inline int dmaengine_desc_free(struct dma_async_tx_descriptor *desc)
> return -EPERM;
> }
>
> +struct dma_desc_callback {
> + dma_async_tx_callback callback;
> + void *callback_param;
> +};
> +
> +static inline void
> +dmaengine_desc_get_callback(struct dma_async_tx_descriptor *tx,
> + struct dma_desc_callback *cb)
> +{
> + cb->callback = tx->callback;
> + cb->callback_param = tx->callback_param;
> +}
> +
> +static inline void
> +dmaengine_desc_callback_invoke(struct dma_desc_callback *cb, void *result)
> +{
> + if (cb->callback)
> + cb->callback(cb->callback_param);
> +}
> +
> /* --- DMA device --- */
>
> int dma_async_device_register(struct dma_device *device);
>
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