diff options
| author | Maciej W. Rozycki <macro@linux-mips.org> | 2008-05-21 22:10:22 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 09:12:59 +0200 |
| commit | 35542c5ebced864776d90d83d1e255016fd4c084 (patch) | |
| tree | 2d190b468fbd76286762a25656452492b89acb9e /include/asm-x86/io_apic.h | |
| parent | a1133d8e4ffc2db751eb987a2f3cf8ead67927c3 (diff) | |
| download | lwn-35542c5ebced864776d90d83d1e255016fd4c084.tar.gz lwn-35542c5ebced864776d90d83d1e255016fd4c084.zip | |
x86: I/O APIC: clean up the 8259A on a NMI watchdog failure
There is no point in keeping the 8259A enabled if the I/O APIC NMI
watchdog has failed and the 8259A is not used to pass through regular
timer interrupts. This fixes problems with some systems where some logic
gets confused.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/io_apic.h')
| -rw-r--r-- | include/asm-x86/io_apic.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-x86/io_apic.h b/include/asm-x86/io_apic.h index d593e14f0341..a6732566ad05 100644 --- a/include/asm-x86/io_apic.h +++ b/include/asm-x86/io_apic.h @@ -137,6 +137,9 @@ extern int sis_apic_bug; /* 1 if "noapic" boot option passed */ extern int skip_ioapic_setup; +/* 1 if the timer IRQ uses the '8259A Virtual Wire' mode */ +extern int timer_through_8259; + static inline void disable_ioapic_setup(void) { skip_ioapic_setup = 1; @@ -162,6 +165,7 @@ extern void ioapic_init_mappings(void); #else /* !CONFIG_X86_IO_APIC */ #define io_apic_assign_pci_irqs 0 +static const int timer_through_8259 = 0; #endif #endif |