diff options
| author |   Cyrill Gorcunov <gorcunov@gmail.com> | 2008-01-30 13:32:31 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:32:31 +0100 |
| commit | 8eed92605334f1cd8fd025631f6a61522746b124 (patch) | |
| tree | 87fe2e938ef39db99a19dc6d7df95c4e29225d46 /arch/x86/kernel/bootflag.c | |
| parent | x86: hlt on early crash (diff) | |
| download | linux-dev-8eed92605334f1cd8fd025631f6a61522746b124.tar.xz linux-dev-8eed92605334f1cd8fd025631f6a61522746b124.zip | |
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>
Diffstat (limited to 'arch/x86/kernel/bootflag.c')
| -rw-r--r-- | arch/x86/kernel/bootflag.c | 50 |
1 files changed, 27 insertions, 23 deletions
diff --git a/arch/x86/kernel/bootflag.c b/arch/x86/kernel/bootflag.c index 0b9860530a6b..30f25a75fe28 100644 --- a/arch/x86/kernel/bootflag.c +++ b/arch/x86/kernel/bootflag.c @@ -1,8 +1,6 @@ /* * 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); |