-ENOATTACHMENT (also a common issue...)
now fixed.
Jan
--
Best regards,
Dmitry Adamushko
diff -upr xenomai-SVN/include/nucleus/intr.h xenomai/include/nucleus/intr.h
--- xenomai-SVN/include/nucleus/intr.h 2006-07-20 11:09:01.000000000 +0200
+++ xenomai/include/nucleus/intr.h 2006-08-29 21:20:19.000000000 +0200
@@ -43,6 +43,8 @@ typedef struct xnintr {
#if defined(CONFIG_XENO_OPT_SHIRQ_LEVEL) || defined(CONFIG_XENO_OPT_SHIRQ_EDGE)
struct xnintr *next; /* !< Next object in the IRQ-sharing chain. */
+#else
+ unsigned unhandled; /* !< Number of consequent unhandled interrupts */
#endif /* CONFIG_XENO_OPT_SHIRQ_LEVEL || CONFIG_XENO_OPT_SHIRQ_EDGE */
xnisr_t isr; /* !< Interrupt service routine. */
diff -upr xenomai-SVN/ksrc/nucleus/intr.c xenomai/ksrc/nucleus/intr.c
--- xenomai-SVN/ksrc/nucleus/intr.c 2006-07-20 12:35:40.000000000 +0200
+++ xenomai/ksrc/nucleus/intr.c 2006-08-29 21:52:49.000000000 +0200
@@ -159,6 +159,8 @@ int xnintr_init(xnintr_t *intr,
intr->flags = flags;
#if defined(CONFIG_XENO_OPT_SHIRQ_LEVEL) || defined(CONFIG_XENO_OPT_SHIRQ_EDGE)
intr->next = NULL;
+#else
+ intr->unhandled = 0;
#endif /* CONFIG_XENO_OPT_SHIRQ_LEVEL || CONFIG_XENO_OPT_SHIRQ_EDGE */
return 0;
@@ -374,6 +376,7 @@ void xnintr_clock_handler(void)
xnintr_irq_handler(nkclock.irq, &nkclock);
}
+#define XNINTR_MAX_UNHANDLED 1000
/*
* Low-level interrupt handler dispatching the ISRs -- Called with
* interrupts off.
@@ -393,6 +396,14 @@ static void xnintr_irq_handler(unsigned
s = intr->isr(intr);
++intr->hits;
+ if (unlikely(s == XN_ISR_NONE && ++intr->unhandled == XNINTR_MAX_UNHANDLED)) {
+ xnlogerr("xnintr_check_status: %d of unhandled consequent interrupts. "
+ "Disabling the IRQ line #%d\n",
+ XNINTR_MAX_UNHANDLED, irq);
+ s |= XN_ISR_NOENABLE;
+ } else
+ intr->unhandled = 0;
+
if (s & XN_ISR_PROPAGATE)
xnarch_chain_irq(irq);
else if (!(s & XN_ISR_NOENABLE))
@@ -422,6 +433,7 @@ static void xnintr_irq_handler(unsigned
typedef struct xnintr_shirq {
xnintr_t *handlers;
+ int unhandled;
#ifdef CONFIG_SMP
atomic_counter_t active;
#endif /* CONFIG_SMP */
@@ -482,12 +494,21 @@ static void xnintr_shirq_handler(unsigne
intr = shirq->handlers;
while (intr) {
- s |= intr->isr(intr) & XN_ISR_BITMASK;
+ s |= intr->isr(intr);
++intr->hits;
intr = intr->next;
}
+
xnintr_shirq_unlock(shirq);
+ if (unlikely(s == XN_ISR_NONE && ++shirq->unhandled == XNINTR_MAX_UNHANDLED)) {
+ xnlogerr("xnintr_irq_handler: %d of unhandled consequent interrupts. "
+ "Disabling the IRQ line #%d\n",
+ XNINTR_MAX_UNHANDLED, irq);
+ s |= XN_ISR_NOENABLE;
+ } else
+ shirq->unhandled = 0;
+
if (s & XN_ISR_PROPAGATE)
xnarch_chain_irq(irq);
else if (!(s & XN_ISR_NOENABLE))
@@ -527,16 +548,15 @@ static void xnintr_edge_shirq_handler(un
intr = shirq->handlers;
while (intr != end) {
- int ret, code, bits;
+ int ret, code;
ret = intr->isr(intr);
code = ret & ~XN_ISR_BITMASK;
- bits = ret & XN_ISR_BITMASK;
+ s |= ret;
if (code == XN_ISR_HANDLED) {
++intr->hits;
end = NULL;
- s |= bits;
} else if (code == XN_ISR_NONE && end == NULL)
end = intr;
@@ -554,6 +574,14 @@ static void xnintr_edge_shirq_handler(un
("xnintr_edge_shirq_handler() : failed to get the IRQ%d line free.\n",
irq);
+ if (unlikely(s == XN_ISR_NONE && ++shirq->unhandled == XNINTR_MAX_UNHANDLED)) {
+ xnlogerr("xnintr_irq_handler: %d of unhandled consequent interrupts. "
+ "Disabling the IRQ line #%d\n",
+ XNINTR_MAX_UNHANDLED, irq);
+ s |= XN_ISR_NOENABLE;
+ } else
+ shirq->unhandled = 0;
+
if (s & XN_ISR_PROPAGATE)
xnarch_chain_irq(irq);
else if (!(s & XN_ISR_NOENABLE))
@@ -613,6 +641,7 @@ static int xnintr_shirq_attach(xnintr_t
handler = &xnintr_edge_shirq_handler;
#endif /* CONFIG_XENO_OPT_SHIRQ_EDGE */
}
+ shirq->unhandled = 0;
err = xnarch_hook_irq(intr->irq, handler, intr->iack, intr);
if (err)
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