From: Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
To: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Gregory Fong
<gregory.0xf0-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Alexandre Courbot
<gnurou-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
bcm-kernel-feedback-list
<bcm-kernel-feedback-list-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>,
Brian Norris
<computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Florian Fainelli
<f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH 0/3] GPIO support for BRCMSTB
Date: Tue, 2 Jun 2015 17:28:31 +0100 [thread overview]
Message-ID: <20150602162830.GI2067@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <CACRpkdY_-zq-1srBC213MK_RoVvPsfTpRTQyx-4yRvCOV5JdxQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Tue, Jun 02, 2015 at 11:05:21AM +0200, Linus Walleij wrote:
> ... and have the
> IRQ handler return IRQ_NONE if the IRQ comes from this
> bank, or IRQ_HANDLED if it has handled an IRQ from its own
> space.
I'm not sure that's worded correctly or not, but... fwiw, all IRQ handlers
_should_ be returning IRQ_NONE if the IRQ does not belong to them whether
or not they're shared handlers.
That is so the kernel can detect stuck IRQs and report that fact, rather
than just locking up silently. ARM CPUs make no progress when the IRQ to
them is permanently asserted, so a stuck IRQ can be rather problematical.
--
FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up
according to speedtest.net.
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next prev parent reply other threads:[~2015-06-02 16:28 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-06 8:37 [PATCH 0/3] GPIO support for BRCMSTB Gregory Fong
2015-05-06 8:37 ` [PATCH 1/3] dt-bindings: add brcmstb-gpio GPIO binding Gregory Fong
[not found] ` <1430901477-10678-2-git-send-email-gregory.0xf0-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-12 10:43 ` Linus Walleij
[not found] ` <1430901477-10678-1-git-send-email-gregory.0xf0-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-06 8:37 ` [PATCH 2/3] gpio: Add GPIO support for Broadcom STB SoCs Gregory Fong
2015-05-07 8:18 ` Paul Bolle
2015-05-08 4:19 ` Gregory Fong
2015-05-12 10:55 ` Linus Walleij
2015-05-12 18:46 ` Gregory Fong
2015-05-13 8:52 ` Linus Walleij
2015-05-06 8:37 ` [PATCH 3/3] gpio: brcmstb: Add interrupt support Gregory Fong
2015-05-12 10:59 ` [PATCH 0/3] GPIO support for BRCMSTB Linus Walleij
2015-05-12 19:38 ` Gregory Fong
[not found] ` <CADtm3G45-u82Rp_0dHf2EfdMokf8E4FaQ84PHnocpvXxU+5_+g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-05-13 8:59 ` Linus Walleij
2015-05-27 3:26 ` Gregory Fong
[not found] ` <CADtm3G4ao=3sHx2F1+V9rwS=jWf6ZdEQi4d24HxQ6MEc+CQ8CQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-06-02 9:05 ` Linus Walleij
[not found] ` <CACRpkdY_-zq-1srBC213MK_RoVvPsfTpRTQyx-4yRvCOV5JdxQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-06-02 16:28 ` Russell King - ARM Linux [this message]
2015-06-03 12:46 ` Linus Walleij
2015-06-03 4:13 ` Gregory Fong
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