Re: [PATCH v5 1/1] dmaengine: switchtec-dma: Introduce Switchtec DMA engine PCI driver

[Christoph Hellwig]

> +/*
> + * Use vender/device and class to identify the DMA function.
> + */
> +#define SWITCHTEC_DMA_DEVICE(device_id) \

I'd word this as:

/*
 * Also use the class code to identify the devices, as some of the
 * device IDs are also used for other devices with other classes by
 * Microsemi.
 */

to emphasis on why this macro even exists.

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>