From: Stephen Warren <swarren@wwwdotorg.org>
To: anish singh <anish198519851985@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Lars Poeschel <larsi@wh2.tu-dresden.de>,
Lars Poeschel <poeschel@lemonage.de>,
Grant Likely <grant.likely@linaro.org>,
"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ian.campbell@citrix.com>,
Kumar Gala <galak@codeaurora.org>,
Pawel Moll <pawel.moll@arm.com>,
Tomasz Figa <tomasz.figa@gmail.com>,
Javier Martinez Canillas <javier.martinez@collabora.co.uk>,
Enric Balletbo i Serra <eballetbo@gmail.com>,
Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>,
Santosh Shilimkar <santosh.shilimkar@ti.com>,
Kevin Hilman <khilman@linaro.org>, Balaji T K <balajitk@ti.com>,
Tony Lindgren <tony@atomide.com>,
Jon Hunter <jgchunter@gmail.com>
Subject: Re: [PATCH v3] gpio: interrupt consistency check for OF GPIO IRQs
Date: Tue, 03 Sep 2013 11:22:23 -0600 [thread overview]
Message-ID: <52261ACF.30504@wwwdotorg.org> (raw)
In-Reply-To: <CAK7N6vrEXVyLHpY-v+SJ668hC0wvHrWOgtviAQ+w5yis7p_E4Q@mail.gmail.com>
On 08/31/2013 09:32 AM, anish singh wrote:
> On Sat, Aug 31, 2013 at 1:23 AM, Stephen Warren <swarren@wwwdotorg.org
> <mailto:swarren@wwwdotorg.org>> wrote:
> I still haven't seen an answer to why we really care about this; how
> many times has code actually allocated the same GPIO/IRQ when it
> shouldn't, in a way that it wasn't detectable by some other mechanism,
> i.e. the feature just not working? Why are we even trying to solve this
> issue? I'm not totally convinced it even makes sense to try and
> solve it.
>
>
> Probably this issue(same gpio/irq being used by multiple drivers) is
> very rare
> but debugging it is bit difficult.
Really? It's easy to just look in /proc/interrupts and
/sys/kernel/debug/gpio.
> This generally happens when we are working
> on latest revised boards where latest gpio number of some driver
> conflicts with the some other driver.
At least in the DT case, which is all that this patch solves, the DT is
describing the HW GPIO/IRQ numbers, so the Linux GPIO numbers are
irrelevant; everything is expressed as raw HW numbers, which are quite
easy to check.
next prev parent reply other threads:[~2013-09-03 17:22 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-26 14:07 [PATCH v3] gpio: interrupt consistency check for OF GPIO IRQs Lars Poeschel
2013-08-27 20:17 ` Stephen Warren
2013-08-27 20:38 ` Santosh Shilimkar
2013-08-27 20:38 ` Santosh Shilimkar
2013-08-29 19:26 ` Linus Walleij
2013-08-30 0:24 ` Javier Martinez Canillas
2013-08-30 19:55 ` Stephen Warren
2013-09-02 9:25 ` Lars Poeschel
2013-09-03 17:27 ` Stephen Warren
2013-09-04 9:05 ` Lars Poeschel
2013-09-04 20:16 ` Stephen Warren
2013-09-09 16:19 ` Mark Brown
2013-09-10 8:47 ` Lars Poeschel
2013-09-10 13:56 ` Javier Martinez Canillas
2013-09-10 19:52 ` Stephen Warren
2013-09-10 21:23 ` Javier Martinez Canillas
2013-09-11 5:24 ` Joel Fernandes
2013-09-11 5:24 ` Joel Fernandes
2013-09-10 19:53 ` Stephen Warren
2013-09-10 21:37 ` Mark Brown
2013-09-10 22:34 ` Stephen Warren
2013-09-11 0:52 ` Javier Martinez Canillas
2013-09-11 19:43 ` Stephen Warren
[not found] ` <5230C7F6.3080803-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-09-16 16:03 ` Lars Poeschel
2013-09-16 16:03 ` Lars Poeschel
2013-09-16 17:09 ` Stephen Warren
[not found] ` <52373B34.4060709-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-09-22 17:01 ` Javier Martinez Canillas
2013-09-22 17:01 ` Javier Martinez Canillas
2013-09-23 20:01 ` Linus Walleij
2013-09-23 20:01 ` Linus Walleij
2013-09-23 20:21 ` Stephen Warren
2013-09-23 20:21 ` Stephen Warren
2013-09-24 8:31 ` Linus Walleij
2013-09-24 8:31 ` Linus Walleij
[not found] ` <CACRpkdZ7E7MGppbkTiObvTDHdmphnbysMKVc1OZjsPXKVuKttQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-24 16:59 ` Stephen Warren
2013-09-24 16:59 ` Stephen Warren
[not found] ` <5241C4DB.9090200-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-10-11 8:16 ` Linus Walleij
2013-10-11 8:16 ` Linus Walleij
2013-09-23 19:41 ` Linus Walleij
2013-09-23 19:41 ` Linus Walleij
2013-09-23 19:53 ` Linus Walleij
2013-09-23 20:12 ` Stephen Warren
2013-09-24 8:26 ` Linus Walleij
[not found] ` <CACRpkdZKqW9veHzc1Rgj4oKsjGRATk+Sz8vJaP3EfT4de+bjQA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-24 16:56 ` Stephen Warren
2013-09-24 16:56 ` Stephen Warren
[not found] ` <20130909161924.GT29403-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2013-11-11 18:28 ` Gerlando Falauto
2013-11-11 18:28 ` Gerlando Falauto
2013-11-11 18:53 ` Stephen Warren
[not found] ` <528127B2.80109-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-11-11 19:17 ` Gerlando Falauto
2013-11-11 19:17 ` Gerlando Falauto
2013-11-11 19:33 ` Stephen Warren
2013-11-11 19:33 ` Stephen Warren
2013-11-11 19:38 ` Tomasz Figa
2013-11-11 19:38 ` Tomasz Figa
2013-11-12 10:29 ` Linus Walleij
2013-11-12 10:29 ` Linus Walleij
2013-09-03 12:43 ` Linus Walleij
2013-09-03 17:32 ` Stephen Warren
2013-08-30 19:53 ` Stephen Warren
2013-09-02 9:38 ` Lars Poeschel
2013-09-03 17:29 ` Stephen Warren
2013-09-04 9:21 ` Lars Poeschel
2013-09-04 20:18 ` Stephen Warren
2013-09-03 12:35 ` Linus Walleij
2013-09-03 17:29 ` Stephen Warren
2013-09-04 8:35 ` Lars Poeschel
2013-09-04 20:13 ` Stephen Warren
[not found] ` <CAK7N6vrEXVyLHpY-v+SJ668hC0wvHrWOgtviAQ+w5yis7p_E4Q@mail.gmail.com>
2013-09-03 17:22 ` Stephen Warren [this message]
2013-08-29 15:14 ` Strashko, Grygorii
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