The core code provides the same functionality when the IRQCHIP_EOI_IF_HANDLED flag is set for the irq chip. Signed-off-by: Thomas Gleixner --- arch/powerpc/sysdev/cpm2_pic.c | 29 ++++++++++++----------------- 1 file changed, 12 insertions(+), 17 deletions(-) Index: linux-2.6-tip/arch/powerpc/sysdev/cpm2_pic.c =================================================================== --- linux-2.6-tip.orig/arch/powerpc/sysdev/cpm2_pic.c +++ linux-2.6-tip/arch/powerpc/sysdev/cpm2_pic.c @@ -115,26 +115,20 @@ static void cpm2_ack(struct irq_data *d) static void cpm2_end_irq(struct irq_data *d) { - struct irq_desc *desc; int bit, word; unsigned int irq_nr = virq_to_hw(d->irq); - desc = irq_to_desc(irq_nr); - if (!(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)) - && desc->action) { - - bit = irq_to_siubit[irq_nr]; - word = irq_to_siureg[irq_nr]; - - ppc_cached_irq_mask[word] |= 1 << bit; - out_be32(&cpm2_intctl->ic_simrh + word, ppc_cached_irq_mask[word]); - - /* - * Work around large numbers of spurious IRQs on PowerPC 82xx - * systems. - */ - mb(); - } + bit = irq_to_siubit[irq_nr]; + word = irq_to_siureg[irq_nr]; + + ppc_cached_irq_mask[word] |= 1 << bit; + out_be32(&cpm2_intctl->ic_simrh + word, ppc_cached_irq_mask[word]); + + /* + * Work around large numbers of spurious IRQs on PowerPC 82xx + * systems. + */ + mb(); } static int cpm2_set_irq_type(struct irq_data *d, unsigned int flow_type) @@ -202,6 +196,7 @@ static struct irq_chip cpm2_pic = { .irq_ack = cpm2_ack, .irq_eoi = cpm2_end_irq, .irq_set_type = cpm2_set_irq_type, + .flags = IRQCHIP_EOI_IF_HANDLED, }; unsigned int cpm2_get_irq(void)