Messages in this thread Patch in this message | | | Date | Fri, 2 Nov 2007 10:37:52 -0700 | From | Greg KH <> | Subject | [patch 2/9] genirq: suppress resend of level interrupts |
| |
2.6.22-stable review patch. If anyone has any objections, please let us know.
------------------ From: Thomas Gleixner <tglx@linutronix.de>
patch 2464286ace55b3abddfb9cc30ab95e2dac1de9a6 in mainline.
Level type interrupts are resent by the interrupt hardware when they are still active at irq_enable().
Suppress the resend mechanism for interrupts marked as level.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- kernel/irq/resend.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
--- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -62,7 +62,12 @@ void check_irq_resend(struct irq_desc *d */ desc->chip->enable(irq); - if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) { + /* + * We do not resend level type interrupts. Level type + * interrupts are resent by hardware when they are still + * active. + */ + if ((status & (IRQ_LEVEL | IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) { desc->status = (status & ~IRQ_PENDING) | IRQ_REPLAY; if (!desc->chip || !desc->chip->retrigger || -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |