From: Michel Pollet <buserror@gmail.com>
Date: Thu, 2 Sep 2010 11:59:59 +0000 (+0100)
Subject: IRQs: A bit of sanity when freeing
X-Git-Tag: v1.0a6~11
X-Git-Url: https://git.htl-mechatronik.at/public/?a=commitdiff_plain;h=83d4a7e3552c184c18baa384487eedf10929cb3a;p=sx%2Fsimavr.git

IRQs: A bit of sanity when freeing

Check the parameters...

Signed-off-by: Michel Pollet <buserror@gmail.com>
---

diff --git a/simavr/sim/sim_irq.c b/simavr/sim/sim_irq.c
index 54e319b..92c2c17 100644
--- a/simavr/sim/sim_irq.c
+++ b/simavr/sim/sim_irq.c
@@ -62,6 +62,8 @@ static avr_irq_hook_t * _avr_alloc_irq_hook(avr_irq_t * irq)
 
 void avr_free_irq(avr_irq_t * irq, uint32_t count)
 {
+	if (!irq || !count)
+		return;
 	for (int i = 0; i < count; i++) {
 		// purge hooks
 		avr_irq_hook_t *hook = irq->hook;