The interrupt acknowledge action have to run after the registered interrupt handler. So we have a chance to bear out the corresponding interrupt request in the corresponding controller hardware.
With this reordering, we optain a proper interrupt handling for level triggered interrupt sources -- for example the new axi_timer v1.02.a introduced in ISE 13.2.
Signed-off-by: Stephan Linz linz@li-pro.net Acked-by: Michal Simek monstr@monstr.eu --- arch/microblaze/cpu/interrupts.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/microblaze/cpu/interrupts.c b/arch/microblaze/cpu/interrupts.c index 5a13211..e7ca859 100644 --- a/arch/microblaze/cpu/interrupts.c +++ b/arch/microblaze/cpu/interrupts.c @@ -155,8 +155,6 @@ void interrupt_handler (void) #endif struct irq_action *act = vecs + irqs;
- intc->iar = mask << irqs; - #ifdef DEBUG_INT printf ("Jumping to interrupt handler rutine addr %x,count %x,arg %x\n", @@ -165,6 +163,8 @@ void interrupt_handler (void) act->handler (act->arg); act->count++;
+ intc->iar = mask << irqs; + #ifdef DEBUG_INT printf ("Dump INTC reg, isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier, intc->iar, intc->mer);