From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Will Newton <will.newton@gmail.com>
Cc: Yong Zhang <yong.zhang@windriver.com>,
Linux Kernel list <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: Threaded irq handler question
Date: Fri, 23 Apr 2010 14:30:12 +0100 [thread overview]
Message-ID: <20100423133012.GC28132@sirena.org.uk> (raw)
In-Reply-To: <r2l87a5b0801004220351h4ba2d1ect49c33893a30806e9@mail.gmail.com>
On Thu, Apr 22, 2010 at 11:51:06AM +0100, Will Newton wrote:
> On Thu, Apr 22, 2010 at 2:37 AM, Yong Zhang <yong.zhang@windriver.com> wrote:
> > Does IRQF_ONESHOT meet your need?
> Almost I think, but I believe if my check handler does not wake the
> thread then I don't get another interrupt ever. I can fix this by
> making my check handler always return WAKE_THREAD, which is slightly
> sub-optimal, but not a big problem.
You shouldn't have a primary IRQ handler at all for I2C type devices
where there's no ability to interact with the chip.
[Sorry, hadn't noticed this subthread.]
next prev parent reply other threads:[~2010-04-23 13:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-21 16:35 Will Newton
2010-04-21 17:28 ` Jonathan Corbet
2010-04-22 10:51 ` Will Newton
2010-04-22 1:37 ` Yong Zhang
2010-04-22 10:51 ` Will Newton
2010-04-23 13:30 ` Mark Brown [this message]
2010-04-23 13:29 ` Mark Brown
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