x86: cpa: fix loop

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 7 insertions, 6 deletions

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index a2ee317548f..5cfc0d4ade5 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -304,7 +304,7 @@ static int change_page_attr_addr(unsigned long address, pgprot_t prot)
 static int change_page_attr_set(unsigned long addr, int numpages,
                                                                 pgprot_t prot)
 {
-        pgprot_t current_prot;
+        pgprot_t current_prot, new_prot;
         int level;
         pte_t *pte;
         int i, ret;
@@ -317,9 +317,10 @@ static int change_page_attr_set(unsigned long addr, int numpages,
                 else
                         pgprot_val(current_prot) = 0;
 
-                pgprot_val(prot) = pgprot_val(current_prot) | pgprot_val(prot);
+                pgprot_val(new_prot) =
+                        pgprot_val(current_prot) | pgprot_val(prot);
 
-                ret = change_page_attr_addr(addr, prot);
+                ret = change_page_attr_addr(addr, new_prot);
                 if (ret)
                         return ret;
                 addr += PAGE_SIZE;
@@ -349,7 +350,7 @@ static int change_page_attr_set(unsigned long addr, int numpages,
 static int change_page_attr_clear(unsigned long addr, int numpages,
                                                                 pgprot_t prot)
 {
-        pgprot_t current_prot;
+        pgprot_t current_prot, new_prot;
         int level;
         pte_t *pte;
         int i, ret;
@@ -361,10 +362,10 @@ static int change_page_attr_clear(unsigned long addr, int numpages,
                 else
                         pgprot_val(current_prot) = 0;
 
-                pgprot_val(prot) =
+                pgprot_val(new_prot) =
                                 pgprot_val(current_prot) & ~pgprot_val(prot);
 
-                ret = change_page_attr_addr(addr, prot);
+                ret = change_page_attr_addr(addr, new_prot);
                 if (ret)
                         return ret;
                 addr += PAGE_SIZE;