From: tglx@linutronix.de (Thomas Gleixner)
To: linux-arm-kernel@lists.infradead.org
Subject: Design of interrupt controller driver
Date: Tue, 6 Jun 2017 12:29:57 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.20.1706061228430.1885@nanos> (raw)
In-Reply-To: <e0380463-f13f-2ca2-b941-7a40b3b8fc36@free.fr>
On Tue, 6 Jun 2017, Mason wrote:
> On 06/06/2017 09:39, Thomas Gleixner wrote:
> What about disable_irq(virq);
> That function /is/ exported API, and eventually calls mask_irq.
>
> disable_irq -> __disable_irq_nosync -> __disable_irq -> irq_disable -> mask_irq
What you can call from an ISR is disable_irq_nosync(). disable_irq() will
deadlock.
Thanks,
tglx
prev parent reply other threads:[~2017-06-06 10:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-03 16:49 Design of interrupt controller driver Mason
2017-06-03 18:20 ` Mason
2017-06-04 13:55 ` Thomas Gleixner
2017-06-04 17:18 ` Mason
2017-06-04 20:13 ` Thomas Gleixner
2017-06-04 23:40 ` Mason
2017-06-05 8:23 ` Thomas Gleixner
2017-06-05 11:57 ` Mason
2017-06-06 7:39 ` Thomas Gleixner
2017-06-06 9:35 ` Mason
2017-06-06 10:29 ` Thomas Gleixner [this message]
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