linux-kernel - Re: [2.6 patch] drivers/scsi/wd33c93.c: cleanups

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Date:	Mon, 21 Aug 2006 22:41:02 +0200
From:	Adrian Bunk <bunk@...sta.de>
To:	Christoph Hellwig <hch@...radead.org>,
	James.Bottomley@...elEye.com, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] drivers/scsi/wd33c93.c: cleanups

On Mon, Aug 21, 2006 at 08:25:48PM +0100, Russell King wrote:
> On Mon, Aug 21, 2006 at 09:22:15PM +0200, Adrian Bunk wrote:
> > On Mon, Aug 21, 2006 at 11:53:44AM +0100, Christoph Hellwig wrote:
> > > On Mon, Aug 21, 2006 at 12:43:57PM +0200, Adrian Bunk wrote:
> > > > This patch contains the following cleanups:
> > > > - #include <linux/irq.h> for getting the prototypes of
> > > >   {dis,en}able_irq()
> > > 
> > > nothing outside of arch code must ever include <linux/irq.h>
> > 
> > Why?
> > It sounds rather strange that non-arch code should use asm headers.
> 
> Still the wrong header.  <linux/interrupt.h> is what you're looking for.
> 
> $ grep '\(en\|dis\)able_irq' include/linux/interrupt.h
> extern void disable_irq_nosync(unsigned int irq);
> extern void disable_irq(unsigned int irq);
> extern void enable_irq(unsigned int irq);
> static inline void disable_irq_nosync_lockdep(unsigned int irq)
>         disable_irq_nosync(irq);
> static inline void disable_irq_lockdep(unsigned int irq)
>         disable_irq(irq);
> static inline void enable_irq_lockdep(unsigned int irq)
>         enable_irq(irq);
> static inline int enable_irq_wake(unsigned int irq)
> static inline int disable_irq_wake(unsigned int irq)
> #  define disable_irq_nosync_lockdep(irq)       disable_irq_nosync(irq)
> #  define disable_irq_lockdep(irq)              disable_irq(irq)
> #  define enable_irq_lockdep(irq)               enable_irq(irq)

Unfortunately, it isn't:

<--  snip  -->

...
#ifdef CONFIG_GENERIC_HARDIRQS
extern void disable_irq_nosync(unsigned int irq);
extern void disable_irq(unsigned int irq);
extern void enable_irq(unsigned int irq);
...

<--  snip  -->

> Russell King

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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