[PATCH RFC 09/11] misc/sgi-gru: use ptep_get() for page-table reads

[Muhammad Usama Anjum <usama.anjum@xxxxxxx>]

A leaf PMD is being read through ptep_get() by treating the PMD address
as PTE-sized table storage. ptep_get() now accepts hw_pte_t *, so update
the cast accordingly.

pte_offset_kernel() also returns hw_pte_t *. Get pte_t value by calling
ptep_get().

Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxx>
---
 drivers/misc/sgi-gru/grufault.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index 3557d78ee47a2..ff89d34ad2aa4 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -228,10 +228,10 @@ static int atomic_pte_lookup(struct vm_area_struct *vma, 
unsigned long vaddr,
                goto err;
 #ifdef CONFIG_X86_64
        if (unlikely(pmd_leaf(*pmdp)))
-               pte = ptep_get((pte_t *)pmdp);
+               pte = ptep_get((hw_pte_t *)pmdp);
        else
 #endif
-               pte = *pte_offset_kernel(pmdp, vaddr);
+               pte = ptep_get(pte_offset_kernel(pmdp, vaddr));
 
        if (unlikely(!pte_present(pte) ||
                     (write && (!pte_write(pte) || !pte_dirty(pte)))))
-- 
2.47.3