linux-kernel - Re: [PATCH v3] iio: adc: xilinx-xadc: Push interrupts into threaded context

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Message-ID: <55C07160.5040907@metafoo.de>
Date:	Tue, 04 Aug 2015 10:01:36 +0200
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Xander Huff <xander.huff@...com>, jic23@...nel.org,
	bigeasy@...utronix.de
CC:	knaack.h@....de, pmeerw@...erw.net, michal.simek@...inx.com,
	soren.brinkmann@...inx.com, linux-iio@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org,
	joe.hershberger@...com, joshc@...com, nathan.sullivan@...com,
	jaeden.amero@...com
Subject: Re: [PATCH v3] iio: adc: xilinx-xadc: Push interrupts into threaded
 context

On 08/03/2015 10:18 PM, Xander Huff wrote:
> On 7/24/2015 7:38 AM, Lars-Peter Clausen wrote:
>> Hi,
>>
>> Sorry, but I don't think this patch has been sufficiently tested against a
>> mainline kernel. The driver wont even probe the way it is right now.
>>
> Thanks for your responses. I'm not sure why it doesn't probe for you since I
> was able to do a fair amount of tests with it on our device.

genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq 157
xadc: probe of f8007100.xadc failed with error -22

You can' request a threaded IRQ without having IRQF_ONESHOT set, since this
will effectively result in a IRQ storm.

> 
> I'll get to work on your suggestions and hopefully having a v4 out sometime
> next week.
> 

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