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x86/ioapic: Add proper checks to setp/enable_IO_APIC()

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No point to have the same checks at every call site. Add them to the
functions, so they can be called unconditionally.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/20150115211703.490719938@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2015-01-15 21:22:32 +00:00
parent 8686608336
commit a46f5c8927
1 changed files with 7 additions and 4 deletions
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11
arch/x86/kernel/apic/io_apic.c
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@ -1507,7 +1507,10 @@ void __init enable_IO_APIC(void)
int i8259_apic, i8259_pin;
int apic, pin;
if (!nr_legacy_irqs())
if (skip_ioapic_setup)
nr_ioapics = 0;
if (!nr_legacy_irqs() || !nr_ioapics)
return;
for_each_ioapic_pin(apic, pin) {
@ -2373,9 +2376,9 @@ void __init setup_IO_APIC(void)
{
int ioapic;
/*
* calling enable_IO_APIC() is moved to setup_local_APIC for BP
*/
if (skip_ioapic_setup || !nr_ioapics)
return;
io_apic_irqs = nr_legacy_irqs() ? ~PIC_IRQS : ~0UL;
apic_printk(APIC_VERBOSE, "ENABLING IO-APIC IRQs\n");