[PATCH] powerpc: CPM2 interrupt handler failure after 100,000 interrupts

The CPM2 interrupt handler does not return success to the IRQ subsystem, which
causes it to kill the IRQ line after 100,000 interrupts.

Signed-off-by: Edson Seabra <Edson.Seabra@cyclades.com>
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
index d8991b88dc9c..5e8cc5ec6ab5 100644
--- a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
+++ b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
@@ -130,10 +130,11 @@ mpc85xx_cds_show_cpuinfo(struct seq_file *m)
 }
 
 #ifdef CONFIG_CPM2
-static void cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
 {
         while((irq = cpm2_get_irq(regs)) >= 0)
                 __do_IRQ(irq, regs);
+        return IRQ_HANDLED;
 }
 
 static struct irqaction cpm2_irqaction = {