Re: [PATCH] dma-mapping: Stub out dma_{alloc,free,map}_pages() API

[Christoph Hellwig]

On Mon, Jun 16, 2025 at 02:15:56PM +0100, James Clark wrote:
>> Yes it does, it has a few modes that don't require it. Presumably we can't 
>> just add a depends into the kconfig for all devices because they might not 
>> be using DMA.
>
> *for all the different variants of spi-fsl-dpsi devices I mean

This is drivers/spi/spi-fsl-dspi.c?

Yes, looks like it is one of those rare devices supporting a DMA and
non-DMA mode.  But everything seems nicely guarded off using
"dspi->devtype_data->trans_mode == DSPI_DMA_MODE" checks there.  So
wrap them into a little helper using IS_ENABLED(CONFIG_HAS_DMA) and
everything should be sorted out.