phys_addr -= offset;
size = PAGE_ALIGN(size + offset);
+ if (!ioremap_allowed(phys_addr, size, prot))
+ return NULL;
+
area = get_vm_area_caller(size, VM_IOREMAP,
__builtin_return_address(0));
if (!area)
return NULL;
vaddr = (unsigned long)area->addr;
+ area->phys_addr = phys_addr;
if (ioremap_page_range(vaddr, vaddr + size, phys_addr,
__pgprot(prot))) {
void iounmap(volatile void __iomem *addr)
{
- vunmap((void *)((unsigned long)addr & PAGE_MASK));
+ void *vaddr = (void *)((unsigned long)addr & PAGE_MASK);
+
+ if (!iounmap_allowed(vaddr))
+ return;
+
+ if (is_vmalloc_addr(vaddr))
+ vunmap(vaddr);
}
EXPORT_SYMBOL(iounmap);