diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/ipmmu-vmsa.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 034293ca4b9a..a32d237c0f22 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -678,30 +678,33 @@ done: static void ipmmu_clear_pud(struct ipmmu_vmsa_device *mmu, pud_t *pud) { - /* Free the page table. */ pgtable_t table = pud_pgtable(*pud); - __free_page(table); /* Clear the PUD. */ *pud = __pud(0); ipmmu_flush_pgtable(mmu, pud, sizeof(*pud)); + + /* Free the page table. */ + __free_page(table); } static void ipmmu_clear_pmd(struct ipmmu_vmsa_device *mmu, pud_t *pud, pmd_t *pmd) { + pmd_t pmdval = *pmd; unsigned int i; - /* Free the page table. */ - if (pmd_table(*pmd)) { - pgtable_t table = pmd_pgtable(*pmd); - __free_page(table); - } - /* Clear the PMD. */ *pmd = __pmd(0); ipmmu_flush_pgtable(mmu, pmd, sizeof(*pmd)); + /* Free the page table. */ + if (pmd_table(pmdval)) { + pgtable_t table = pmd_pgtable(pmdval); + + __free_page(table); + } + /* Check whether the PUD is still needed. */ pmd = pmd_offset(pud, 0); for (i = 0; i < IPMMU_PTRS_PER_PMD; ++i) { |