x86: coding style cleanup for kernel/bootflag.c

This patch eliminates checkpatch.pl complaints on bootflag.c

No code changed:

   text    data     bss     dec     hex filename
    321       8       0     329     149 bootflag.o.before
    321       8       0     329     149 bootflag.o.after

   md5:
      9c1b474bcf25ddc1724a29c19880043f  bootflag.o.before.asm
      9c1b474bcf25ddc1724a29c19880043f  bootflag.o.after.asm
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/bootflag.c

 /*
  *	Implement 'Simple Boot Flag Specification 2.0'
  */
-
-
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
@@ -14,40 +12,38 @@
 
 #include <linux/mc146818rtc.h>
 
-
 #define SBF_RESERVED (0x78)
 #define SBF_PNPOS    (1<<0)
 #define SBF_BOOTING  (1<<1)
 #define SBF_DIAG     (1<<2)
 #define SBF_PARITY   (1<<7)
 
-
 int sbf_port __initdata = -1;	/* set via acpi_boot_init() */
 
-
 static int __init parity(u8 v)
 {
 	int x = 0;
 	int i;
-	
-	for(i=0;i<8;i++)
-	{
-		x^=(v&1);
-		v>>=1;
+
+	for (i = 0; i < 8; i++) {
+		x ^= (v & 1);
+		v >>= 1;
 	}
+
 	return x;
 }
 
 static void __init sbf_write(u8 v)
 {
 	unsigned long flags;
-	if(sbf_port != -1)
-	{
+
+	if (sbf_port != -1) {
 		v &= ~SBF_PARITY;
-		if(!parity(v))
-			v|=SBF_PARITY;
+		if (!parity(v))
+			v |= SBF_PARITY;
 
-		printk(KERN_INFO "Simple Boot Flag at 0x%x set to 0x%x\n", sbf_port, v);
+		printk(KERN_INFO "Simple Boot Flag at 0x%x set to 0x%x\n",
+			sbf_port, v);
 
 		spin_lock_irqsave(&rtc_lock, flags);
 		CMOS_WRITE(v, sbf_port);
@@ -57,33 +53,41 @@ static void __init sbf_write(u8 v)
 
 static u8 __init sbf_read(void)
 {
-	u8 v;
 	unsigned long flags;
-	if(sbf_port == -1)
+	u8 v;
+
+	if (sbf_port == -1)
 		return 0;
+
 	spin_lock_irqsave(&rtc_lock, flags);
 	v = CMOS_READ(sbf_port);
 	spin_unlock_irqrestore(&rtc_lock, flags);
+
 	return v;
 }
 
 static int __init sbf_value_valid(u8 v)
 {
-	if(v&SBF_RESERVED)		/* Reserved bits */
+	if (v & SBF_RESERVED)		/* Reserved bits */
 		return 0;
-	if(!parity(v))
+	if (!parity(v))
 		return 0;
+
 	return 1;
 }
 
 static int __init sbf_init(void)
 {
 	u8 v;
-	if(sbf_port == -1)
+
+	if (sbf_port == -1)
 		return 0;
+
 	v = sbf_read();
-	if(!sbf_value_valid(v))
-		printk(KERN_WARNING "Simple Boot Flag value 0x%x read from CMOS RAM was invalid\n",v);
+	if (!sbf_value_valid(v)) {
+		printk(KERN_WARNING "Simple Boot Flag value 0x%x read from "
+			"CMOS RAM was invalid\n", v);
+	}
 
 	v &= ~SBF_RESERVED;
 	v &= ~SBF_BOOTING;
@@ -92,7 +96,7 @@ static int __init sbf_init(void)
 	v |= SBF_PNPOS;
 #endif
 	sbf_write(v);
+
 	return 0;
 }
-
 module_init(sbf_init);