x86: PAT use reserve free memtype in set_memory_uc

Use reserve_memtype and free_memtype interfaces in set_memory_uc/set_memory_wb
interfaces to avoid aliasing.
Usage model of set_memory_uc and set_memory_wb is for RAM memory and users
will first call set_memory_uc and call set_memory_wb after use to reset the
attribute.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 20c01f2b2e11..0cdb7f11ce49 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -95,10 +95,10 @@ int ioremap_change_attr(unsigned long vaddr, unsigned long size,
         switch (prot_val) {
         case _PAGE_CACHE_UC:
         default:
-                err = set_memory_uc(vaddr, nrpages);
+                err = _set_memory_uc(vaddr, nrpages);
                 break;
         case _PAGE_CACHE_WB:
-                err = set_memory_wb(vaddr, nrpages);
+                err = _set_memory_wb(vaddr, nrpages);
                 break;
         }