[SPARC]: Respect vm_page_prot in io_remap_page_range().

Make sure the callers do a pgprot_noncached() on
vma->vm_page_prot.

Pointed out by Hugh Dickens.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/asm-sparc/pgtable.h b/include/asm-sparc/pgtable.h
index b33c35411e82..9eea8f4d41f0 100644
--- a/include/asm-sparc/pgtable.h
+++ b/include/asm-sparc/pgtable.h
@@ -269,11 +269,14 @@ BTFIXUPDEF_CALL_CONST(pte_t, mk_pte, struct page *, pgprot_t)
 
 BTFIXUPDEF_CALL_CONST(pte_t, mk_pte_phys, unsigned long, pgprot_t)
 BTFIXUPDEF_CALL_CONST(pte_t, mk_pte_io, unsigned long, pgprot_t, int)
+BTFIXUPDEF_CALL_CONST(pgprot_t, pgprot_noncached, pgprot_t)
 
 #define mk_pte(page,pgprot) BTFIXUP_CALL(mk_pte)(page,pgprot)
 #define mk_pte_phys(page,pgprot) BTFIXUP_CALL(mk_pte_phys)(page,pgprot)
 #define mk_pte_io(page,pgprot,space) BTFIXUP_CALL(mk_pte_io)(page,pgprot,space)
 
+#define pgprot_noncached(pgprot) BTFIXUP_CALL(pgprot_noncached)(pgprot)
+
 BTFIXUPDEF_INT(pte_modify_mask)
 
 static pte_t pte_modify(pte_t pte, pgprot_t newprot) __attribute_const__;
@@ -309,9 +312,6 @@ BTFIXUPDEF_CALL(pte_t *, pte_offset_kernel, pmd_t *, unsigned long)
 #define pte_unmap(pte)          do{}while(0)
 #define pte_unmap_nested(pte)   do{}while(0)
 
-/* The permissions for pgprot_val to make a page mapped on the obio space */
-extern unsigned int pg_iobits;
-
 /* Certain architectures need to do special things when pte's
  * within a page table are directly modified.  Thus, the following
  * hook is made available.