ia64: Fix the build after max_cstate changes.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

xen/drivers/acpi/pmstat.c

@@ -530,13 +530,13 @@ int do_pm_op(struct xen_sysctl_pm_op *op)
 
     case XEN_SYSCTL_pm_op_get_max_cstate:
     {
-        op->get_max_cstate = max_cstate;
+        op->get_max_cstate = acpi_get_cstate_limit();
         break;
     }
 
     case XEN_SYSCTL_pm_op_set_max_cstate:
     {
-        max_cstate = op->set_max_cstate;
+        acpi_set_cstate_limit(op->set_max_cstate);
         break;
     }
 

xen/include/asm-x86/config.h

@@ -35,6 +35,7 @@
 #define CONFIG_ACPI_SLEEP 1
 #define CONFIG_ACPI_NUMA 1
 #define CONFIG_ACPI_SRAT 1
+#define CONFIG_ACPI_CSTATE 1
 
 #define CONFIG_VGA 1
 

xen/include/xen/acpi.h

@@ -402,9 +402,7 @@ static inline int acpi_blacklisted(void)
 
 #endif /*!CONFIG_ACPI_INTERPRETER*/
 
-#define	ACPI_CSTATE_LIMIT_DEFINED	/* for driver builds */
-#ifdef	CONFIG_ACPI
-
+#ifdef	CONFIG_ACPI_CSTATE
 /*
  * Set highest legal C-state
  * 0: C0 okay, but not C1