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authorThomas Gleixner <tglx@linutronix.de>2007-08-12 15:46:36 +0000
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-08-12 11:05:45 -0700
commitcc75b92d11384ba14f93828a2a0040344ae872e7 (patch)
treeeff53bb649b115ff16a377cc0fd81f5807406ba2 /arch/x86_64/kernel
parent2464286ace55b3abddfb9cc30ab95e2dac1de9a6 (diff)
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/x86_64/kernel')
-rw-r--r--arch/x86_64/kernel/io_apic.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 050141c0602..f57f8b90191 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -800,12 +800,15 @@ static struct irq_chip ioapic_chip;
static void ioapic_register_intr(int irq, unsigned long trigger)
{
- if (trigger)
+ if (trigger) {
+ 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");
+ }
}
static void setup_IO_APIC_irq(int apic, int pin, unsigned int irq,