Re: [PATCH 5/5] Add DMA engine driver for Freescale MPC85xxprocessors.

On 9/13/07, Zhang Wei-r63237 [off-list ref] wrote:

Hi,

quoted

quoted

+static void fsl_dma_set_src(dma_addr_t addr,
+                           struct dma_async_tx_descriptor

*tx, int index)

quoted

+{

What is index supposed to mean?  It's not used, or documented
anywhere than
I can see.

I've also got more document here. Hi, Dan, could you give me some
explanation about this API? :)

The index field gets used for multi-source (or multi-dest) operations.
 XOR, for example, is a multi-source operation.  I am preparing a
documentation patch.

[..]

--
Dan