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Re: [PATCH] of: irq: don't return 0 from of_irq_get()

From Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Newsgroups linux.kernel
Subject Re: [PATCH] of: irq: don't return 0 from of_irq_get()
Date 2016-06-10 14:20 +0200
Message-ID <rItzQ-4sE-9@gated-at.bofh.it> (permalink)
References <rDUqZ-5Or-1@gated-at.bofh.it> <rFWf0-32g-21@gated-at.bofh.it>
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On 6/3/2016 3:14 PM, Rob Herring wrote:

>> of_irq_get() returns 0 iff irq_create_of_mapping() call fails. Returning
>> both error code  and 0 on failure is a sign of a misdesigned API. Return
>> -ENXIO instead like one of the callers, platform_get_irq(), does; fix up
>> the kernel-doc as well...
>>
>> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
>
> So I think this is done this way because of the variation in NO_IRQ
> definition across architectures.

    I remember that NO_IRQ is "considered harmful" by Linus. Actually, I'm nit 
sure what you mean, could you elaborate on that?

> But then again, of_irq_get is
> relatively new.

> Rob

MBR, Sergei

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Thread

Re: [PATCH] of: irq: don't return 0 from of_irq_get() Rob Herring <robh@kernel.org> - 2016-06-03 14:20 +0200
  Re: [PATCH] of: irq: don't return 0 from of_irq_get() Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2016-06-10 14:20 +0200
    Re: [PATCH] of: irq: don't return 0 from of_irq_get() Rob Herring <robh@kernel.org> - 2016-06-10 15:00 +0200

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