x86, mrst: make mrst_identify_cpu() an inline returning enum

We have an enum, might as well use it.  While we're at it, make it an
inline... there is really no point in calling a function for this
stuff.

LKML-Reference: <1274295685-6774-3-git-send-email-jacob.jun.pan@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Acked-by: 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_identify_cpu(void);
 extern int mrst_timer_options __cpuinitdata;
 int __init sfi_parse_mrtc(struct sfi_table_header *table);
 
@@ -27,6 +26,12 @@ enum mrst_cpu_type {
 	MRST_CPU_CHIP_PENWELL,
 };
 
+extern enum mrst_cpu_type __mrst_cpu_chip;
+static enum mrst_cpu_type mrst_identify_cpu(void)
+{
+	return __mrst_cpu_chip;
+}
+
 enum mrst_timer_options {
 	MRST_TIMER_DEFAULT,
 	MRST_TIMER_APBT_ONLY,

arch/x86/kernel/mrst.c

@@ -50,7 +50,8 @@ int mrst_timer_options __cpuinitdata;
 
 static u32 sfi_mtimer_usage[SFI_MTMR_MAX_NUM];
 static struct sfi_timer_table_entry sfi_mtimer_array[SFI_MTMR_MAX_NUM];
-static int mrst_cpu_chip;
+enum mrst_cpu_type __mrst_cpu_chip;
+EXPORT_SYMBOL_GPL(__mrst_cpu_chip);
 
 int sfi_mtimer_num;
 
@@ -233,25 +234,19 @@ void __init mrst_rtc_init(void)
 	sfi_table_parse(SFI_SIG_MRTC, NULL, NULL, sfi_parse_mrtc);
 }
 
-int mrst_identify_cpu(void)
-{
-	return mrst_cpu_chip;
-}
-EXPORT_SYMBOL_GPL(mrst_identify_cpu);
-
 void __cpuinit mrst_arch_setup(void)
 {
 	if (boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model == 0x27)
-		mrst_cpu_chip = MRST_CPU_CHIP_PENWELL;
+		__mrst_cpu_chip = MRST_CPU_CHIP_PENWELL;
 	else if (boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model == 0x26)
-		mrst_cpu_chip = MRST_CPU_CHIP_LINCROFT;
+		__mrst_cpu_chip = MRST_CPU_CHIP_LINCROFT;
 	else {
 		pr_err("Unknown Moorestown CPU (%d:%d), default to Lincroft\n",
 			boot_cpu_data.x86, boot_cpu_data.x86_model);
-		mrst_cpu_chip = MRST_CPU_CHIP_LINCROFT;
+		__mrst_cpu_chip = MRST_CPU_CHIP_LINCROFT;
 	}
 	pr_debug("Moorestown CPU %s identified\n",
-		(mrst_cpu_chip == MRST_CPU_CHIP_LINCROFT) ?
+		(__mrst_cpu_chip == MRST_CPU_CHIP_LINCROFT) ?
 		"Lincroft" : "Penwell");
 }