linux-kernel - Re: [PATCH] net: ethernet: rocker: Add select to CONFIG

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Date:	Thu, 4 Dec 2014 19:15:48 +0100
From:	Jiri Pirko <jiri@...nulli.us>
To:	Andreas Ruprecht <mail@...ran.de>
Cc:	Jim Davis <jim.epost@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next <linux-next@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>, sfeldma@...il.com,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: ethernet: rocker: Add select to CONFIG_BRIDGE in
 Kconfig

Thu, Dec 04, 2014 at 06:36:37PM CET, mail@...ran.de wrote:
>On 04.12.2014 17:34, Jim Davis wrote:
>> Building with the attached random configuration file,
>> 
>> drivers/built-in.o: In function `rocker_port_fdb_learn_work':
>> /home/jim/linux/drivers/net/ethernet/rocker/rocker.c:3014: undefined
>> reference to `br_fdb_external_learn_del'
>> /home/jim/linux/drivers/net/ethernet/rocker/rocker.c:3016: undefined
>> reference to `br_fdb_external_learn_add'
>> 
>
>Hi,
>
>the problem here is that CONFIG_BRIDGE is set to 'm' (leading to
>inclusion of the two functions above in the kernel module) while
>CONFIG_ROCKER is set to 'y', requiring the functions at link time.
>
>Is the attached patch sufficient to fix this?
>
>Regards,
>
>Andreas

>>From 0529c3cbe381338dc3337e07a71e15b3d22a3255 Mon Sep 17 00:00:00 2001
>From: Andreas Ruprecht <rupran@...server.de>
>Date: Thu, 4 Dec 2014 18:28:09 +0100
>Subject: [PATCH] net: ethernet: rocker: Add select to CONFIG_BRIDGE in Kconfig
>
>In a configuration with CONFIG_BRIDGE set to 'm' and CONFIG_ROCKER
>set to 'y', undefined references occur at link time:
>
>> drivers/built-in.o: In function `rocker_port_fdb_learn_work':
>> /home/jim/linux/drivers/net/ethernet/rocker/rocker.c:3014: undefined
>> reference to `br_fdb_external_learn_del'
>> /home/jim/linux/drivers/net/ethernet/rocker/rocker.c:3016: undefined
>> reference to `br_fdb_external_learn_add'
>
>This patch fixes these by selecting CONFIG_BRIDGE from CONFIG_ROCKER.
>
>Reported-by: Jim Davis <jim.epost@...il.com>
>Signed-off-by: Andreas Ruprecht <rupran@...server.de>
Acked-by: Jiri Pirko <jiri@...nulli.us>

this is ok for now. There is a plan to replace
br_fdb_external_learn_add/del a by notifier which will fix this as well.

Thanks.

>---
> drivers/net/ethernet/rocker/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
>diff --git a/drivers/net/ethernet/rocker/Kconfig b/drivers/net/ethernet/rocker/Kconfig
>index 11a850eab628..ade10ec4c78d 100644
>--- a/drivers/net/ethernet/rocker/Kconfig
>+++ b/drivers/net/ethernet/rocker/Kconfig
>@@ -18,6 +18,7 @@ if NET_VENDOR_ROCKER
> config ROCKER
> 	tristate "Rocker switch driver (EXPERIMENTAL)"
> 	depends on PCI && NET_SWITCHDEV
>+	select BRIDGE
> 	---help---
> 	  This driver supports Rocker switch device.
> 
>-- 
>1.9.1
>

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