Re: [PATCH v2 09/11] s390: mm: Convert to GENERIC_IOREMAP

Christoph Hellwig
2022-08-21T07:05:48Z

> +void __iomem *
> +arch_ioremap(phys_addr_t *paddr, size_t size, unsigned long *prot_val)
> {
> if (!static_branch_unlikely(&have_mio))
> + return (void __iomem *) *paddr;
> + return NULL;

This logic isn't new in the patch, but it could really use a comment
as it is rather non-obvious.