diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2007-08-12 15:46:36 +0000 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-12 11:05:45 -0700 |
| commit | cc75b92d11384ba14f93828a2a0040344ae872e7 (patch) | |
| tree | eff53bb649b115ff16a377cc0fd81f5807406ba2 /arch/i386 | |
| parent | genirq: suppress resend of level interrupts (diff) | |
| download | linux-dev-cc75b92d11384ba14f93828a2a0040344ae872e7.tar.xz linux-dev-cc75b92d11384ba14f93828a2a0040344ae872e7.zip | |
genirq: mark io_apic level interrupts to avoid resend
Level type interrupts do not need to be resent. It was also found that
some chipsets get confused in case of the resend.
Mark the ioapic level type interrupts as such to avoid the resend
functionality in the generic irq code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/i386')
| -rw-r--r-- | arch/i386/kernel/io_apic.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c index 893df8280756..4b8a8da4b2e0 100644 --- a/arch/i386/kernel/io_apic.c +++ b/arch/i386/kernel/io_apic.c @@ -1256,12 +1256,15 @@ static struct irq_chip ioapic_chip; static void ioapic_register_intr(int irq, int vector, unsigned long trigger) { if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) || - trigger == IOAPIC_LEVEL) + trigger == IOAPIC_LEVEL) { + irq_desc[irq].status |= IRQ_LEVEL; set_irq_chip_and_handler_name(irq, &ioapic_chip, handle_fasteoi_irq, "fasteoi"); - else + } else { + irq_desc[irq].status &= ~IRQ_LEVEL; set_irq_chip_and_handler_name(irq, &ioapic_chip, handle_edge_irq, "edge"); + } set_intr_gate(vector, interrupt[irq]); } |