[RFC 1/2] dma: rework dma_sync_single interface

[Sascha Hauer]

Hi Denis,

On Tue, Feb 28, 2023 at 01:32:47PM +0300, Denis Orlov wrote:
> -#ifndef dma_sync_single_for_device
> -static inline void dma_sync_single_for_device(dma_addr_t address, size_t size,
> -				enum dma_data_direction dir)
> +#ifndef arch_sync_dma_for_device
> +void arch_sync_dma_for_device(void *vaddr, size_t size,
> +			      enum dma_data_direction dir);
>  {
> -	barrier_data((void *)address);
> +	barrier_data(address);
>  }
>  #endif

"static inline" is missing here. Also "address" should be "vaddr".

With that fixed imx_v7_defconfig compiles successfully and from what I
can tell also works.

I haven't looked into this patch yet. Passing a struct device to the
dma_sync functions is a step into the right direction for sure.

Ultimately both patches should be merged to avoid bisecting failures.

Sascha


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