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| author | Thomas Gleixner <tglx@linutronix.de> | 2015-01-15 21:22:32 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-01-22 15:10:55 +0100 |
| commit | a46f5c89274245e42834dc976896444efd53ccdc (patch) | |
| tree | f967fb640bcd6e40195b568f5c580f8131065775 /arch/x86/kernel/apic/io_apic.c | |
| parent | 8686608336e11276d72d020cb0b67bee70d9a5cd (diff) | |
| download | op-kernel-dev-a46f5c89274245e42834dc976896444efd53ccdc.zip op-kernel-dev-a46f5c89274245e42834dc976896444efd53ccdc.tar.gz | |
x86/ioapic: Add proper checks to setp/enable_IO_APIC()
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>
Diffstat (limited to 'arch/x86/kernel/apic/io_apic.c')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index e5e00f5..f4dc246 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -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"); |
