iommu/arm-smmu: fix panic in arm_smmu_alloc_init_pte

kernel panic happened when iommu_unmap a buffer larger than 2MB,
more than expected pmd entries got “invalidated”, due to a wrong range
passed to arm_smmu_alloc_init_pte. it was likely a typo, now we fix
it, passing the correct "end" address to arm_smmu_alloc_init_pte.

Signed-off-by: Bin Wang <binw@marvell.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 69d001a71b227a6057250a42f1df38b430a60180..647c3c7fd7428f31dd2b313a1fc8b29ac33b482c 100644 (file)
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1381,7 +1381,7 @@ static int arm_smmu_alloc_init_pmd(struct arm_smmu_device *smmu, pud_t *pud,
 
        do {
                next = pmd_addr_end(addr, end);
-               ret = arm_smmu_alloc_init_pte(smmu, pmd, addr, end, pfn,
+               ret = arm_smmu_alloc_init_pte(smmu, pmd, addr, next, pfn,
                                              prot, stage);
                phys += next - addr;
        } while (pmd++, addr = next, addr < end);