diff options
Diffstat (limited to 'drivers/staging/tidspbridge/core/tiomap3430.c')
| -rw-r--r-- | drivers/staging/tidspbridge/core/tiomap3430.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/staging/tidspbridge/core/tiomap3430.c b/drivers/staging/tidspbridge/core/tiomap3430.c index 9cf29fcea11e..f9609ce2c163 100644 --- a/drivers/staging/tidspbridge/core/tiomap3430.c +++ b/drivers/staging/tidspbridge/core/tiomap3430.c @@ -1547,20 +1547,27 @@ EXIT_LOOP: static u32 user_va2_pa(struct mm_struct *mm, u32 address) { pgd_t *pgd; + pud_t *pud; pmd_t *pmd; pte_t *ptep, pte; pgd = pgd_offset(mm, address); - if (!(pgd_none(*pgd) || pgd_bad(*pgd))) { - pmd = pmd_offset(pgd, address); - if (!(pmd_none(*pmd) || pmd_bad(*pmd))) { - ptep = pte_offset_map(pmd, address); - if (ptep) { - pte = *ptep; - if (pte_present(pte)) - return pte & PAGE_MASK; - } - } + if (pgd_none(*pgd) || pgd_bad(*pgd)) + return 0; + + pud = pud_offset(pgd, address); + if (pud_none(*pud) || pud_bad(*pud)) + return 0; + + pmd = pmd_offset(pud, address); + if (pmd_none(*pmd) || pmd_bad(*pmd)) + return 0; + + ptep = pte_offset_map(pmd, address); + if (ptep) { + pte = *ptep; + if (pte_present(pte)) + return pte & PAGE_MASK; } return 0; |