linux-kernel - linux-next: build failure after merge of the final tree (Was: linux-next: build warning after merge of the final tree)

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Date:	Wed, 29 Sep 2010 14:16:57 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Pavel Emelyanov <xemul@...allels.com>
Subject: linux-next: build failure after merge of the final tree (Was:
 linux-next: build warning after merge of the final tree)

Hi all,

On Wed, 29 Sep 2010 14:02:38 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the final tree, today's linux-next build (powerpc
> ppc44x_defconfig) produced tis warning:
> 
> WARNING: net/sunrpc/sunrpc.o(.init.text+0x110): Section mismatch in reference from the function init_sunrpc() to the function .exit.text:rpcauth_remove_module()
> The function __init init_sunrpc() references
> a function __exit rpcauth_remove_module().
> This is often seen when error handling in the init function
> uses functionality in the exit path.
> The fix is often to remove the __exit annotation of
> rpcauth_remove_module() so it may be used outside an exit section.
> 
> Probably caused by commit 2f72c9b73730c335381b13e2bd221abe1acea394
> ("sunrpc: The per-net skeleton").

This actually causes a build failure on a sparc32 defconfig build:

`rpcauth_remove_module' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o

I applied the following patch for today:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Wed, 29 Sep 2010 14:07:07 +1000
Subject: [PATCH] sunrpc: fix up section mismatch

Fixes:

`rpcauth_remove_module' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 include/linux/sunrpc/auth.h |    4 ++--
 net/sunrpc/auth.c           |    2 +-
 net/sunrpc/auth_generic.c   |    2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 5bbc447..b202475 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -122,8 +122,8 @@ extern const struct rpc_authops	authnull_ops;
 int __init		rpc_init_authunix(void);
 int __init		rpc_init_generic_auth(void);
 int __init		rpcauth_init_module(void);
-void __exit		rpcauth_remove_module(void);
-void __exit		rpc_destroy_generic_auth(void);
+void			rpcauth_remove_module(void);
+void			rpc_destroy_generic_auth(void);
 void 			rpc_destroy_authunix(void);
 
 struct rpc_cred *	rpc_lookup_cred(void);
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index e9eaaf7..2c0d9e6 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -658,7 +658,7 @@ out1:
 	return err;
 }
 
-void __exit rpcauth_remove_module(void)
+void rpcauth_remove_module(void)
 {
 	rpc_destroy_authunix();
 	rpc_destroy_generic_auth();
diff --git a/net/sunrpc/auth_generic.c b/net/sunrpc/auth_generic.c
index 43162bb..e010a01 100644
--- a/net/sunrpc/auth_generic.c
+++ b/net/sunrpc/auth_generic.c
@@ -158,7 +158,7 @@ int __init rpc_init_generic_auth(void)
 	return rpcauth_init_credcache(&generic_auth);
 }
 
-void __exit rpc_destroy_generic_auth(void)
+void rpc_destroy_generic_auth(void)
 {
 	rpcauth_destroy_credcache(&generic_auth);
 }
-- 
1.7.1

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/
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