diff options
Diffstat (limited to 'linux-core/drm_compat.c')
| -rw-r--r-- | linux-core/drm_compat.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c index 86bae306..162e4656 100644 --- a/linux-core/drm_compat.c +++ b/linux-core/drm_compat.c @@ -59,9 +59,14 @@ static inline void change_pte_range(struct mm_struct *mm, pmd_t * pmd, do { if (pte_present(*pte)) { pte_t ptent; - ptent = *pte; ptep_get_and_clear(mm, addr, pte); + ptent = *pte; lazy_mmu_prot_update(ptent); + } else { + ptep_get_and_clear(mm, addr, pte); + } + if (!pte_none(*pte)) { + DRM_ERROR("Ugh. Pte was presen\n"); } } while (pte++, addr += PAGE_SIZE, addr != end); pte_unmap(pte - 1); |