Fix counting of interrupts for devices that attach to elroy(4). Shared

interrupts would be counted double, once for the interrupting device and
once for the device at the head of the chain.  The handlers would run properly
though.  Avoid this by giving each device its own interrupt counter instead
of using the counter provided by the generic interrupt handling code for the
head of the chain.

1 files changed, 12 insertions, 11 deletions

diff --git a/sys/arch/hppa/dev/apic.c b/sys/arch/hppa/dev/apic.c
index 0c58d0fd445..0b88d7740f9 100644
--- a/sys/arch/hppa/dev/apic.c
+++ b/sys/arch/hppa/dev/apic.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: apic.c,v 1.13 2011/04/23 22:20:22 kettenis Exp $	*/
+/*	$OpenBSD: apic.c,v 1.14 2011/05/01 21:59:39 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -175,29 +175,30 @@ apic_intr_establish(void *v, pci_intr_handle_t ih,
 		return NULL;
 	}
 
+	cnt = malloc(sizeof(struct evcount), M_DEVBUF, M_NOWAIT);
+	if (!cnt) {
+		free(aiv, M_DEVBUF);
+		return (NULL);
+	}
+
 	aiv->sc = sc;
 	aiv->ih = ih;
 	aiv->handler = handler;
 	aiv->arg = arg;
 	aiv->next = NULL;
-	aiv->cnt = NULL;
-	if (apic_intr_list[irq]) {
-		cnt = malloc(sizeof(struct evcount), M_DEVBUF, M_NOWAIT);
-		if (!cnt) {
-			free(aiv, M_DEVBUF);
-			return (NULL);
-		}
+	aiv->cnt = cnt;
+
+	evcount_attach(cnt, name, NULL);
 
-		evcount_attach(cnt, name, NULL);
+	if (apic_intr_list[irq]) {
 		biv = apic_intr_list[irq];
 		while (biv->next)
 			biv = biv->next;
 		biv->next = aiv;
-		aiv->cnt = cnt;
 		return (arg);
 	}
 
-	if ((iv = cpu_intr_establish(pri, irq, apic_intr, aiv, name))) {
+	if ((iv = cpu_intr_establish(pri, irq, apic_intr, aiv, NULL))) {
 		ent0 = (31 - irq) & APIC_ENT0_VEC;
 		ent0 |= apic_get_int_ent0(sc, line);
 #if 0