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microblaze: avoid interrupt race conditions

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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>
This commit is contained in:
Stephan Linz 2012-02-22 19:12:43 +01:00 committed by Michal Simek
parent b9f0b73052
commit 0f883267a8
1 changed files with 2 additions and 2 deletions
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4
arch/microblaze/cpu/interrupts.c
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@ -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);