linux-kernel - linux-next: sysctl tree build failure

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Date:	Thu, 12 Nov 2009 18:48:05 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: linux-next: sysctl tree build failure

Hi Eric,

Today's linux-next build (powerpc allnoconfig) failed like this:

kernel/built-in.o: In function `get_sysctl':
sysctl_binary.c:(.text+0x100d4): undefined reference to `dev_get_by_index'

Caused by commit 26a7034b40ba80f82f64fa251a2cbf49f9971c6a ("sysctl:
Reduce sys_sysctl to a compatibility wrapper around /proc/sys").

CONFIG_NET is not set for this build.

I have used this patch for today:
(It does produce this warning, though:

kernel/sysctl_binary.c:1253: warning: unused variable 'net'

so needs more work.)

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Thu, 12 Nov 2009 18:43:35 +1100
Subject: [PATCH] sysctl: fix build dependency on CONFIG_NET

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 kernel/sysctl_binary.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/sysctl_binary.c b/kernel/sysctl_binary.c
index 471438b..4f58ea7 100644
--- a/kernel/sysctl_binary.c
+++ b/kernel/sysctl_binary.c
@@ -1270,6 +1270,7 @@ repeat:
 		if (ctl_name == table->ctl_name)
 			procname = table->procname;
 
+#ifdef CONFIG_NET
 		/*
 		 * For a wild card entry map from ifindex to network
 		 * device name.
@@ -1279,6 +1280,7 @@ repeat:
 			if (dev)
 				procname = dev->name;
 		}
+#endif
 		if (procname) {
 			int len;
 
-- 
1.6.5.2

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