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 10:57:07 +0100 [thread overview]
Message-ID: <20141202095707.GG2076@hermes> (raw)
In-Reply-To: <314E5ECDAA86314791309FA670550F89C9C519EE@SINTEFEXMBX05.sintef.no>
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.
next prev parent reply other threads:[~2014-12-02 9:57 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
2014-12-02 9:51 ` Terje Frøysa
2014-12-02 9:57 ` Gilles Chanteperdrix [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20141202095707.GG2076@hermes \
--to=gilles.chanteperdrix@xenomai.org \
--cc=Terje.Froysa@sintef.no \
--cc=xenomai@xenomai.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.