arm64: mm: Drop redundant check in pmd_trans_huge()

pmd_val(pmd) is redundant because a positive pmd_present(pmd) ensures
a positive pmd_val(pmd) according to their definitions like below.

  #define pmd_val(x)       ((x).pmd)
  #define pmd_present(pmd) pte_present(pmd_pte(pmd))
  #define pte_present(pte) (pte_valid(pte) || pte_present_invalid(pte))
  #define pte_valid(pte)   (!!(pte_val(pte) & PTE_VALID))
  #define pte_present_invalid(pte) \
          ((pte_val(pte) & (PTE_VALID | PTE_PRESENT_INVALID)) == PTE_PRESENT_INVALID)

pte_present() can't be positive unless either of the flag PTE_VALID or
PTE_PRESENT_INVALID is set. In this case, pmd_val(pmd) should be positive
either.

So lets drop the redundant check pmd_val(pmd) and no functional changes
intended.

Signed-off-by: Gavin Shan <[email protected]>
Reviewed-by: Dev Jain <[email protected]>
Reviewed-by: Anshuman Khandual <[email protected]>
Reviewed-by: Ryan Roberts <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

0 files changed, 0 insertions, 0 deletions