From e67465f1298671266a8e824c1751afdb7c08c860 Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Wed, 21 May 2008 22:09:26 +0100 Subject: [PATCH] x86: I/O APIC: clean up after a fasteoi failure Disable the 8259A when routing of the timer interrupt through the chip to the local APIC of the primary processor has failed. Signed-off-by: Maciej W. Rozycki Signed-off-by: Ingo Molnar --- arch/x86/kernel/io_apic_32.c | 1 + arch/x86/kernel/io_apic_64.c | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c index 61cf366d04..e7b7655c4e 100644 --- a/arch/x86/kernel/io_apic_32.c +++ b/arch/x86/kernel/io_apic_32.c @@ -2228,6 +2228,7 @@ static inline void __init check_timer(void) printk(" works.\n"); goto out; } + disable_8259A_irq(0); apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_FIXED | vector); printk(" failed.\n"); diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c index 9f16ca4b5a..6433fc99f1 100644 --- a/arch/x86/kernel/io_apic_64.c +++ b/arch/x86/kernel/io_apic_64.c @@ -1729,6 +1729,7 @@ static inline void __init check_timer(void) apic_printk(APIC_VERBOSE," works.\n"); goto out; } + disable_8259A_irq(0); apic_write(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_FIXED | cfg->vector); apic_printk(APIC_VERBOSE," failed.\n"); -- 2.39.5