Re: [PATCH 1/3] dmaengine: Add multi-buffer support in single DMA transfer

[Niklas Cassel]

On Fri, Mar 13, 2026 at 03:16:50PM +0000, Robin Murphy wrote:
> On 2026-03-13 6:49 am, Sumit Kumar wrote:
> 
> If you want to batch multiple
> dmaengine_slave_config()/dma_prep_slave_single() operations into some
> many-to-many variant of dmaengine_prep_peripheral_dma_vec(), then surely
> that requires actual batching of the config part as well - e.g. passing an
> explicit vector of distinct dma_slave_configs corresponding to each
> individual dma_vec - in order to be able to work correctly in general?

This make me think of Frank's series which tries to create an API which
combines dmaengine_slave_config() with dmaengine_prep_slave_single():

https://lore.kernel.org/dmaengine/20251218-dma_prep_config-v2-0-c07079836128@xxxxxxx/

Not exactly the same, but might still be of interest.


Kind regards,
Niklas