Why does callback irq_startup in struct irq_chip return _unsigned_ int ?

From	Heiner Kallweit <hkallweit1@gmail.com>
Newsgroups	linux.kernel
Subject	Why does callback irq_startup in struct irq_chip return _unsigned_ int ?
Date	2017-05-25 23:30 +0200
Message-ID	<tL8ut-55g-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi Thomas,

just by chance I noticed that callback irq_startup in struct irq_chip
returns an unsigned int.
This doesn't seem to make sense as the result is a normal retval which
is casted to a signed int in function irq_startup() anyway.

Is there any specific reason for this or is it simply a bug?

Rgds, Heiner

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Why does callback irq_startup in struct irq_chip return _unsigned_  int ? Heiner Kallweit <hkallweit1@gmail.com> - 2017-05-25 23:30 +0200
  Re: Why does callback irq_startup in struct irq_chip return _unsigned_  int ? Thomas Gleixner <tglx@linutronix.de> - 2017-05-26 09:20 +0200

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