From: hyl <heyongli@xxxxxxxxx>
Date: Mon, 12 Oct 2009 16:23:47 +0800
> look the console output, system seems hang on a live lock:
> tl0_irq5 triggered just after the irq been re-enable in the handler
> of irq5: the ldc_rx.
>
> i have no idea about the t10_irq5, just guess that: the special
> configuration lead to t10_irq5 been triggered continuously, and
> the trigger condition can not been cleared.
Yes, it seems that stack is exhausted. Ho hum...
I guess the following patch works too? Please make sure you've
removed your changes when testing this.
Thanks.
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index adf5f27..cb3c72c 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1242,13 +1242,13 @@ int ldc_bind(struct ldc_channel *lp, const char *name)
snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name);
err = request_irq(lp->cfg.rx_irq, ldc_rx,
- IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+ IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
lp->rx_irq_name, lp);
if (err)
return err;
err = request_irq(lp->cfg.tx_irq, ldc_tx,
- IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+ IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
lp->tx_irq_name, lp);
if (err) {
free_irq(lp->cfg.rx_irq, lp);
--
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