From: Toralf Förster <redacted>
Date: Sat, 29 Jul 2006 20:55:11 +0200

Subject: linux- 2.6.17.7 undefined reference to `alloc_ltalkdev'

Bug is that appletalk is built modular, which is where
alloc_ltalkdev is exported from, but we allow users of
this symbol, such as the cops driver, to be built non-modular.

Luckily the fix is simple, we need to change CONFIG_DEV_APPLETALK
to be a 'tristate' instead of a 'bool'.  The following patch
is what I'll use to fix this bug.

Thanks for the report.

diff-tree 66d3ad53b6867aa1bc499062bd19f85bfeee2f9e (from d0ccba71dfe903a737d011d93a076c10cf487b19)
Author: David S. Miller [off-list ref]
Date:   Sun Jul 30 15:54:11 2006 -0700

    [ATALK]: Make CONFIG_DEV_APPLETALK a tristate.
    
    Otherwise we allow building appletalk drivers in-kernel when
    CONFIG_ATALK is modular.  That doesn't work because these drivers use
    symbols such as "alloc_talkdev" which is exported from code built
    by CONFIG_ATALK.
    
    Noticed by Toralf Förster.
    
    Signed-off-by: David S. Miller [off-list ref]

diff --git a/drivers/net/appletalk/Kconfig b/drivers/net/appletalk/Kconfig
index b14e890..0a0e0cd 100644
--- a/drivers/net/appletalk/Kconfig
+++ b/drivers/net/appletalk/Kconfig

@@ -29,7 +29,7 @@ config ATALK
 	  even politically correct people are allowed to say Y here.
 
 config DEV_APPLETALK
-	bool "Appletalk interfaces support"
+	tristate "Appletalk interfaces support"
 	depends on ATALK
 	help
 	  AppleTalk is the protocol that Apple computers can use to communicate