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

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Date:	Tue, 21 Jun 2011 12:50:14 +0000 (UTC)
From:	WANG Cong <xiyou.wangcong@...il.com>
To:	netdev@...r.kernel.org
Subject: Re: [PATCH] netconsole: fix build when CONFIG_NETCONSOLE_DYNAMIC is
 turned on

On Mon, 20 Jun 2011 21:25:04 -0700, Randy Dunlap wrote:

> 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 make NETCONSOLE_DYNAMIC require CONFIGFS_FS=y to fix the build
> errors.
> 
> This is one possible fix.
> 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> ---
>  drivers/net/Kconfig |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- lnx-30-rc3.orig/drivers/net/Kconfig +++
> lnx-30-rc3/drivers/net/Kconfig
> @@ -3416,7 +3416,7 @@ config NETCONSOLE
>  
>  config NETCONSOLE_DYNAMIC
>  	bool "Dynamic reconfiguration of logging targets"
> -	depends on NETCONSOLE && SYSFS && CONFIGFS_FS 
> +	depends on NETCONSOLE
> && SYSFS && CONFIGFS_FS=y

I recall someone already fixed this by adding "select CONFIGFS_FS",
who removed it again... :-/

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