From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Tue, 2 Dec 2014 10:57:07 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Message-ID: <20141202095707.GG2076@hermes>
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Subject: Re: [Xenomai] IRQ155 not handled. Disabling IRQ line
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To: Terje =?utf-8?Q?Fr=C3=B8ysa?= <Terje.Froysa@sintef.no>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>

On Tue, Dec 02, 2014 at 09:51:01AM +0000, Terje Frøysa wrote:
> Well, the code:
> 	DEBUG_PRINT(KERN_DEBUG "RTDM IMU %d - enable IRQ\n", info->gpio_pin_n);
> 	err = rtdm_irq_enable(&info->gpio_irq);
> only exists one place in the driver and is only executed in the kernel-context of  rt_dev_open() from user-space.
> The irq-device is opened only once before entering the read-loop.
> 
> The repeated read calls from the user space (rt_dev_read()) only blocs on the irq semaphore and copies the irq-time back to the user.
> I don't see how the irq-line can be re-enabled by this code.
> If the device have been repeatedly opened, the dmesg would have been flooded with log-messages.

What flags do you pass to rtdm_irq_request?

-- 
					    Gilles.