Subject: Re: [PATCH v6 05/15] swiotlb: Add a new get_io_tlb_mem getter

From: Christoph Hellwig <[email-masked]>
Date: Mon, 10 May 2021 17:03:42 +0200

> +static inline struct io_tlb_mem *get_io_tlb_mem(struct device *dev)
> +{
> +#ifdef CONFIG_DMA_RESTRICTED_POOL
> +	if (dev && dev->dma_io_tlb_mem)
> +		return dev->dma_io_tlb_mem;
> +#endif /* CONFIG_DMA_RESTRICTED_POOL */
> +
> +	return io_tlb_default_mem;

Given that we're also looking into a not addressing restricted pool
I'd rather always assign the active pool to dev->dma_io_tlb_mem and
do away with this helper.