netdev - [PATCH v2] netconsole: fix build when CONFIG_NETCONSOLE

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Message-Id: <20110621110120.50c3b57d.randy.dunlap@oracle.com>
Date:	Tue, 21 Jun 2011 11:01:20 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Ben Hutchings <bhutchings@...arflare.com>,
	Andrew Morton <akpm@...ux-foundation.org>, davem@...emloft.net
Cc:	netdev@...r.kernel.org, bugme-daemon@...zilla.kernel.org,
	hilld@...arystorm.net
Subject: [PATCH v2] netconsole: fix build when CONFIG_NETCONSOLE_DYNAMIC is
 turned on

From: Randy Dunlap <randy.dunlap@...cle.com>

When NETCONSOLE_DYNAMIC=y and CONFIGFS_FS=m, there are build errors
in netconsole:

drivers/built-in.o: In function `drop_netconsole_target':
netconsole.c:(.text+0x1a100f): undefined reference to `config_item_put'
drivers/built-in.o: In function `make_netconsole_target':
netconsole.c:(.text+0x1a10b9): undefined reference to `config_item_init_type_name'
drivers/built-in.o: In function `write_msg':
netconsole.c:(.text+0x1a11a4): undefined reference to `config_item_get'
netconsole.c:(.text+0x1a1211): undefined reference to `config_item_put'
drivers/built-in.o: In function `netconsole_netdev_event':
netconsole.c:(.text+0x1a12cc): undefined reference to `config_item_put'
netconsole.c:(.text+0x1a12ec): undefined reference to `config_item_get'
netconsole.c:(.text+0x1a1366): undefined reference to `config_item_put'
drivers/built-in.o: In function `init_netconsole':
netconsole.c:(.init.text+0x953a): undefined reference to `config_group_init'
netconsole.c:(.init.text+0x9560): undefined reference to `configfs_register_subsystem'
drivers/built-in.o: In function `dynamic_netconsole_exit':
netconsole.c:(.exit.text+0x809): undefined reference to `configfs_unregister_subsystem'

so fix the NETCONSOLE_DYNAMIC depends clause to prevent this.
Based on email suggestion from Ben Hutchings.  Thanks.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=37992

Reported-by: David Hill <hilld@...arystorm.net>
Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
Cc: Ben Hutchings <bhutchings@...arflare.com>
---
 drivers/net/Kconfig |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- lnx-30-rc3.orig/drivers/net/Kconfig
+++ lnx-30-rc3/drivers/net/Kconfig
@@ -3416,7 +3416,8 @@ config NETCONSOLE
 
 config NETCONSOLE_DYNAMIC
 	bool "Dynamic reconfiguration of logging targets"
-	depends on NETCONSOLE && SYSFS && CONFIGFS_FS
+	depends on NETCONSOLE && SYSFS && CONFIGFS_FS && \
+			!(NETCONSOLE=y && CONFIGFS_FS=m)
 	help
 	  This option enables the ability to dynamically reconfigure target
 	  parameters (interface, IP addresses, port numbers, MAC addresses)
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