pgprot_device
vmap_page_range(vaddr, vaddr + size, hw_start, pgprot_device(PAGE_KERNEL));
vmap_page_range(vaddr, vaddr + size, hw_start, pgprot_device(PAGE_KERNEL));
vma->vm_page_prot = pgprot_device(vma->vm_page_prot);
prot = pgprot_device(vma->vm_page_prot);
prot = pgprot_device(vma->vm_page_prot);
vma->vm_page_prot = pgprot_device(vma->vm_page_prot);
pgprot_device(PAGE_KERNEL));
vma->vm_page_prot = pgprot_device(vma->vm_page_prot);
#ifndef pgprot_device
if (pgprot_val(oldprot) == pgprot_val(pgprot_device(oldprot)))
newprot = pgprot_device(newprot);