diff options
Diffstat (limited to 'arch/nios2/mm/ioremap.c')
| -rw-r--r-- | arch/nios2/mm/ioremap.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/nios2/mm/ioremap.c b/arch/nios2/mm/ioremap.c index 819bdfcc2e71..fe821efb9a99 100644 --- a/arch/nios2/mm/ioremap.c +++ b/arch/nios2/mm/ioremap.c @@ -86,11 +86,15 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr, if (address >= end) BUG(); do { + p4d_t *p4d; pud_t *pud; pmd_t *pmd; error = -ENOMEM; - pud = pud_alloc(&init_mm, dir, address); + p4d = p4d_alloc(&init_mm, dir, address); + if (!p4d) + break; + pud = pud_alloc(&init_mm, p4d, address); if (!pud) break; pmd = pmd_alloc(&init_mm, pud, address); |