From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Wed, 29 Sep 2004 21:55:52 +0000 (+0000)
Subject: level triggered IRQ fix (Steve Wormley)
X-Git-Tag: release_0_6_1~71
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0ecf89aae327d545af6e10defd2315c97874cbd5;p=thirdparty%2Fqemu.git

level triggered IRQ fix (Steve Wormley)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1078 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/hw/i8259.c b/hw/i8259.c
index c21f0d30608..221506b28f7 100644
--- a/hw/i8259.c
+++ b/hw/i8259.c
@@ -188,7 +188,9 @@ static inline void pic_intack(PicState *s, int irq)
     } else {
         s->isr |= (1 << irq);
     }
-    s->irr &= ~(1 << irq);
+    /* We don't clear a level sensitive interrupt here */
+    if (!(s->elcr & (1 << irq)))
+        s->irr &= ~(1 << irq);
 }
 
 int cpu_get_pic_interrupt(CPUState *env)