x86, mrst: make mrst_timer_options an enum

We have an enum mrst_timer_options, use it so that the kernel knows if
we're missing something from a switch statement or equivalent.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <1274295685-6774-4-git-send-email-jacob.jun.pan@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>

arch/x86/include/asm/mrst.h

@@ -11,7 +11,6 @@
 #ifndef _ASM_X86_MRST_H
 #define _ASM_X86_MRST_H
 extern int pci_mrst_init(void);
-extern int mrst_timer_options __cpuinitdata;
 int __init sfi_parse_mrtc(struct sfi_table_header *table);
 
 /*
@@ -38,6 +37,8 @@ enum mrst_timer_options {
 	MRST_TIMER_LAPIC_APBT,
 };
 
+extern enum mrst_timer_options mrst_timer_options;
+
 #define SFI_MTMR_MAX_NUM 8
 #define SFI_MRTC_MAX	8
 

arch/x86/kernel/mrst.c

@@ -46,7 +46,7 @@
  * lapic (always-on,ARAT) ------ 150
  */
 
-int mrst_timer_options __cpuinitdata;
+__cpuinitdata enum mrst_timer_options mrst_timer_options;
 
 static u32 sfi_mtimer_usage[SFI_MTMR_MAX_NUM];
 static struct sfi_timer_table_entry sfi_mtimer_array[SFI_MTMR_MAX_NUM];