From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: "Terje Frøysa" <Terje.Froysa@sintef.no>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] IRQ155 not handled. Disabling IRQ line
Date: Tue, 2 Dec 2014 10:33:46 +0100 [thread overview]
Message-ID: <20141202093346.GE2076@hermes> (raw)
In-Reply-To: <314E5ECDAA86314791309FA670550F89C9C51961@SINTEFEXMBX05.sintef.no>
On Tue, Dec 02, 2014 at 09:28:37AM +0000, Terje Frøysa wrote:
> Dear forum,
>
> Question:
> If a driver is deemed buggy and the IRQ disabled, why is it still serving the interrupts?
>
> Running Debian 3.8.13-bone67 and Xenomai 2.6.4
>
> At opening call, my GPIO RTDM IRQ driver enables a GPIO line w/irq.
> My user-space program issues read-requests to receive a time-stamp for each irq.
> The irq handler is very compact. It only reads the system time, rises a semaphore if not already up and returns RT_INTR_HANDLED.
>
> When starting (open + loop w/reads), the dmesg log-message appears: "IRQ155 not handled. Disabling IRQ line".
> It appears only once in the start.
> Never-the-less, the interrupts are still handled and keep coming.
Well, probably because the code re-enables the irq line ?
--
Gilles.
next prev parent reply other threads:[~2014-12-02 9:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-02 9:28 [Xenomai] IRQ155 not handled. Disabling IRQ line Terje Frøysa
2014-12-02 9:33 ` Gilles Chanteperdrix [this message]
2014-12-02 9:51 ` Terje Frøysa
2014-12-02 9:57 ` Gilles Chanteperdrix
2014-12-02 10:20 ` Terje Frøysa
2014-12-02 10:53 ` Gilles Chanteperdrix
2014-12-02 12:07 ` Terje Frøysa
2014-12-02 12:13 ` Gilles Chanteperdrix
2014-12-02 12:16 ` Terje Frøysa
2014-12-02 12:17 ` Gilles Chanteperdrix
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