Re: [Patch V4 11/42] x86, ioapic: kill unused global variable timer_through_8259

[Jiang Liu]

On 2014/6/9 22:41, Maciej W. Rozycki wrote:
> On Mon, 9 Jun 2014, Jiang Liu wrote:
> 
>> index d4aba16e6bbf..94a56c233e87 100644
>> --- a/arch/x86/kernel/apic/io_apic.c
>> +++ b/arch/x86/kernel/apic/io_apic.c
>> @@ -2638,8 +2638,6 @@ static int __init disable_timer_pin_setup(char *arg)
>>  }
>>  early_param("disable_timer_pin_1", disable_timer_pin_setup);
>>  
>> -int timer_through_8259 __initdata;
>> -
>>  /*
>>   * This code may look a bit paranoid, but it's supposed to cooperate with
>>   * a wide range of boards and BIOS bugs.  Fortunately only the timer IRQ
>> @@ -2744,7 +2742,6 @@ static inline void __init check_timer(void)
>>  		legacy_pic->unmask(0);
>>  		if (timer_irq_works()) {
>>  			apic_printk(APIC_QUIET, KERN_INFO "....... works.\n");
>> -			timer_through_8259 = 1;
>>  			goto out;
>>  		}
>>  		/*
> 
>  So how does the new NMI watchdog handle systems that use this '8259A 
> Virtual Wire' mode, pretty common on pre-P6 computers?
Hi Maciej,
	We just kill the useless variable "timer_through_8259", 8259 virtual
wire mode is still supported.
Thanks!
Gerry

> 
>   Maciej
> 
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