diff options
| author | Stephan Linz <linz@li-pro.net> | 2012-02-22 19:12:43 +0100 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2012-02-23 12:16:04 +0100 |
| commit | 0f883267a877314f83236a3397c8e0040f8a1129 (patch) | |
| tree | 1ca45afb7459916a3ddbeca0e8076ae10d922812 /arch/microblaze/cpu | |
| parent | b9f0b7305278feba7dc295e58c58f22cfcfe8009 (diff) | |
microblaze: avoid interrupt race conditions
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>
Diffstat (limited to 'arch/microblaze/cpu')
| -rw-r--r-- | 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 5a1321128..e7ca859bf 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); |