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Date: Wed, 5 Jun 2002 22:08:26 +0200 (CEST)
From: Adrian Bunk <bunk@fs.tum.de>
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To: Joseph Pingenot <trelane@digitasaru.net>
cc: linux-kernel@vger.kernel.org
Subject: Re: Build error on 2.5.20 under unstable debian
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On Wed, 5 Jun 2002, Joseph Pingenot wrote:

> Ah.  What does __devexit_p() do?  It looks to be some sort of macro,
>   doing a cast?
>...

No, look at the definition in include/linux/init.h:

<--  snip  -->

...
/* Functions marked as __devexit may be discarded at kernel link time, depending
   on config options.  Newer versions of binutils detect references from
   retained sections to discarded sections and flag an error.  Pointers to
   __devexit functions must use __devexit_p(function_name), the wrapper will
   insert either the function_name or NULL, depending on the config options.
 */
#if defined(MODULE) || defined(CONFIG_HOTPLUG)
#define __devexit_p(x) x
#else
#define __devexit_p(x) NULL
#endif
...

<--  snip  -->


A bit more of explanation is in Documentation/pci.txt.


> -Joseph

cu
Adrian

-- 

You only think this is a free country. Like the US the UK spends a lot of
time explaining its a free country because its a police state.
								Alan Cox

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