linux-kernel - Re: 3.1-rc3 fails to boot on my pandaboard

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Message-ID: <20110825110423.GA12911@linutronix.de>
Date:	Thu, 25 Aug 2011 13:04:23 +0200
From:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:	Luciano Coelho <coelho@...com>
Cc:	linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: 3.1-rc3 fails to boot on my pandaboard

* Luciano Coelho | 2011-08-25 13:39:29 [+0300]:

>Hi,
Hi,

>Any ideas what may be going wrong?

I think my commit was identified as bogus and tglx is going to revert 
it. The problem is that I force ONESHOT mode for all threaded IRQs but
there are also others without the flag which is not allowed.

I was trying to check something but I don't get my board to boot. Could
you please try to boot with the patch reverted and paste me the
the output of 
 cat /proc/interrupts | grep 74 ?

I *think* that the flow handler is level (I can't find evidence of it
beeing edge, and omap_alloc_gc() is the place installing it).

So could you please gather additional debug info with this patch?

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 2e94258..eda25a0 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1327,6 +1327,9 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler,
 	if (!irq_settings_can_request(desc))
 		return -EINVAL;

+	if (irq == 74)
+		printk(KERN_ERR "%s() h %pS th %pS f %lx dev %s flow %pS\n", __func__,
+				handler, thread_fn, irqflags, devname, desc->handle_irq);
 	if (!handler) {
 		if (!thread_fn)
 			return -EINVAL;

%pS should resolve the function names.

Sebastian
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