int iomap_create_wc(resource_size_t base, unsigned long size, pgprot_t *prot)
{
- unsigned long flag = _PAGE_CACHE_WC;
+ enum page_cache_mode pcm = _PAGE_CACHE_MODE_WC;
int ret;
if (!is_io_mapping_possible(base, size))
return -EINVAL;
- ret = io_reserve_memtype(base, base + size, &flag);
+ ret = io_reserve_memtype(base, base + size, &pcm);
if (ret)
return ret;
- *prot = __pgprot(__PAGE_KERNEL | flag);
+ *prot = __pgprot(__PAGE_KERNEL | cachemode2protval(pcm));
return 0;
}
EXPORT_SYMBOL_GPL(iomap_create_wc);
* MTRR is UC or WC. UC_MINUS gets the real intention, of the
* user, which is "WC if the MTRR is WC, UC if you can't do that."
*/
- if (!pat_enabled && pgprot_val(prot) == pgprot_val(PAGE_KERNEL_WC))
- prot = PAGE_KERNEL_UC_MINUS;
+ if (!pat_enabled && pgprot_val(prot) ==
+ (__PAGE_KERNEL | cachemode2protval(_PAGE_CACHE_MODE_WC)))
+ prot = __pgprot(__PAGE_KERNEL |
+ cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS));
return (void __force __iomem *) kmap_atomic_prot_pfn(pfn, prot);
}