From: Ben Gras <ben@minix3.org>
Date: Sat, 8 May 2010 17:21:37 +0000 (+0000)
Subject: kernel: print spurious interrupt message with increasing interval.
X-Git-Tag: v3.1.7~74
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zpipe.c?a=commitdiff_plain;h=72335b7642cbd14eb0effa0bf1a5c9e0ce836242;p=minix.git

kernel: print spurious interrupt message with increasing interval.
---

diff --git a/kernel/interrupt.c b/kernel/interrupt.c
index d315c19e6..61a4a6c17 100644
--- a/kernel/interrupt.c
+++ b/kernel/interrupt.c
@@ -126,11 +126,13 @@ PUBLIC void irq_handle(int irq)
 
   /* Check for spurious interrupts. */
   if(hook == NULL) {
-      static int nspurious[NR_IRQ_VECTORS];
+      static int nspurious[NR_IRQ_VECTORS], report_interval = 100;
       nspurious[irq]++;
-      if(nspurious[irq] == 1 || !(nspurious[irq] % 1000)) {
+      if(nspurious[irq] == 1 || !(nspurious[irq] % report_interval)) {
       	printf("irq_handle: spurious irq %d (count: %d); keeping masked\n",
 		irq, nspurious[irq]);
+	if(report_interval < INT_MAX/2)
+		report_interval *= 2;
       }
       return;
   }