diff options
Diffstat (limited to 'mm/ioremap.c')
| -rw-r--r-- | mm/ioremap.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/mm/ioremap.c b/mm/ioremap.c index e1d008e8f87f..8652426282cc 100644 --- a/mm/ioremap.c +++ b/mm/ioremap.c @@ -28,6 +28,9 @@ void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size, 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) @@ -47,6 +50,12 @@ EXPORT_SYMBOL(ioremap_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); |