From: Marc Kleine-Budde <mkl@pengutronix.de>
To: Mylene Josserand <Mylene.Josserand@navocap.com>
Cc: linux-can@vger.kernel.org
Subject: Re: [imx27 - mcp251x] MCP251x does not work in static ?
Date: Thu, 11 Apr 2013 10:39:17 +0200 [thread overview]
Message-ID: <516676B5.6090903@pengutronix.de> (raw)
In-Reply-To: <CA78C307B8F06747967D122FC656B15377445D@SERVEUR0.nvp.local>
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On 04/11/2013 10:04 AM, Mylene Josserand wrote:
>>> root@navocap:~# ifconfig can0 up
>>> genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq 201
>>> mcp251x spi0.0: failed to acquire irq 201
>>
>> It's a bug in the driver....which was introduced in v3.5[1]. I'm looking
>> for a fix.
>>
>> Marc
>>
>> [1] 1c6c695 genirq: Reject bogus threaded irq requests
>>
>
> Okay.
>
> In this
> http://markmail.org/thread/uc2adurel247yitp#query:+page:1+mid:uc2adurel247yitp+state:results
> and this
> http://www.raspberrypi.org/phpBB3/viewtopic.php?f=44&t=7027&start=150
> posts, they set the irq_flags to IRQF_ONESHOT.
>
> I have tested it and I did not have the error anymore. Maybe it is not a
> good way to fix that ? (I don't know what is a "one shot" IRQ) but in
> case it could help.
> However, it did not fix my static-mcp251x boot hang.
Can you test my patch and give me a Tested-by?
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
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next prev parent reply other threads:[~2013-04-11 8:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-10 13:07 [imx27 - mcp251x] MCP251x does not work in static ? Mylene Josserand
2013-04-10 13:39 ` Marc Kleine-Budde
2013-04-10 14:11 ` Mylene Josserand
2013-04-10 15:30 ` Marc Kleine-Budde
2013-04-11 7:39 ` Mylene Josserand
2013-04-11 7:49 ` Marc Kleine-Budde
2013-04-11 8:04 ` Mylene Josserand
2013-04-11 8:39 ` Marc Kleine-Budde [this message]
2013-04-11 9:22 ` Mylene Josserand
2013-04-11 9:49 ` Marc Kleine-Budde
2013-04-11 14:39 ` Mylene Josserand
2013-04-11 15:09 ` Marc Kleine-Budde
2013-04-12 9:24 ` Mylene Josserand
2013-04-12 9:49 ` Marc Kleine-Budde
2013-04-12 9:36 ` Marc Kleine-Budde
2013-04-12 9:40 ` Mylene Josserand
2013-04-12 9:48 ` Marc Kleine-Budde
2013-04-11 8:36 ` RFC: [PATCH] can: mcp251x: add missing IRQF_ONESHOT to request_threaded_irq Marc Kleine-Budde
2013-04-12 11:16 ` Marc Kleine-Budde
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