1 files changed, 5 insertions, 4 deletions

diff --git a/arch/i386/kernel/cpu/mtrr/centaur.c b/arch/i386/kernel/cpu/mtrr/centaur.c
index 33f00ac314ef..cb9aa3a7a7ab 100644
--- a/arch/i386/kernel/cpu/mtrr/centaur.c
+++ b/arch/i386/kernel/cpu/mtrr/centaur.c
@@ -17,7 +17,7 @@ static u8 centaur_mcr_type;	/* 0 for winchip, 1 for winchip2 */
  */
 
 static int
-centaur_get_free_region(unsigned long base, unsigned long size)
+centaur_get_free_region(unsigned long base, unsigned long size, int replace_reg)
 /*  [SUMMARY] Get a free MTRR.
     <base> The starting (base) address of the region.
     <size> The size (in bytes) of the region.
@@ -26,10 +26,11 @@ centaur_get_free_region(unsigned long base, unsigned long size)
 {
         int i, max;
         mtrr_type ltype;
-        unsigned long lbase;
-        unsigned int lsize;
+        unsigned long lbase, lsize;
 
         max = num_var_ranges;
+        if (replace_reg >= 0 && replace_reg < max)
+                return replace_reg;
         for (i = 0; i < max; ++i) {
                 if (centaur_mcr_reserved & (1 << i))
                         continue;
@@ -49,7 +50,7 @@ mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi)
 
 static void
 centaur_get_mcr(unsigned int reg, unsigned long *base,
-                unsigned int *size, mtrr_type * type)
+                unsigned long *size, mtrr_type * type)
 {
         *base = centaur_mcr[reg].high >> PAGE_SHIFT;
         *size = -(centaur_mcr[reg].low & 0xfffff000) >> PAGE_SHIFT;