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x86/apic: Sanitize ioapic handling

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We have proper stubs for the IOAPIC=n case and the setup/enable
function have the required checks inside now. Remove the ifdeffery and
the copy&pasted conditionals.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>C
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/20150115211703.569830549@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2015-01-15 21:22:34 +00:00
parent a46f5c8927
commit 35e4c6d30e
1 changed files with 3 additions and 14 deletions
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15
arch/x86/kernel/apic/apic.c
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@ -1905,24 +1905,13 @@ int __init APIC_init_uniprocessor(void)
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
setup_local_APIC();
#ifdef CONFIG_X86_IO_APIC
/*
* Now enable IO-APICs, actually call clear_IO_APIC
* We need clear_IO_APIC before enabling error vector
*/
if (!skip_ioapic_setup && nr_ioapics)
/* Enable IO-APICs before enabling error vector */
enable_IO_APIC();
#endif
bsp_end_local_APIC_setup();
#ifdef CONFIG_X86_IO_APIC
if (smp_found_config && !skip_ioapic_setup && nr_ioapics)
if (smp_found_config)
setup_IO_APIC();
else {
nr_ioapics = 0;
}
#endif
x86_init.timers.setup_percpu_clockev();
return 0;