[PATCH] Kconfig: XT_MATCH_PHYSDEV dependency missing

[PATCH] Kconfig: XT_MATCH_PHYSDEV dependency missing

[Florin Malita]

CONFIG_BRIDGE=m && CONFIG_NETFILTER_XT_MATCH_PHYSDEV=y breaks at link time:

LD .tmp_vmlinux1
net/built-in.o: In function `checkentry':xt_physdev.c:(.text+0x223f8):
undefined reference to `brnf_deferred_hooks'
:xt_physdev.c:(.text+0x22420): undefined reference to `brnf_deferred_hooks'
make: *** [.tmp_vmlinux1] Error 1

net/netfilter/xt_physdev.c references 'brn_deferred_hooks' which is
declared in net/bridge/br_netfilter.c but CONFIG_BRIDGE=m prevents
linking br_netfilter.o in. So CONFIG_NETFILTER_XT_MATCH_PHYSDEV really
depends on CONFIG_BRIDGE and this should be enforced in netfilter's Kconfig.

Signed-off-by: Florin Malita <fmalita@gmail.com>
---

diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index a9894dd..b2c412a 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -342,7 +342,7 @@ config NETFILTER_XT_MATCH_MULTIPORT
 
 config NETFILTER_XT_MATCH_PHYSDEV
 	tristate '"physdev" match support'
-	depends on NETFILTER_XTABLES && BRIDGE_NETFILTER
+	depends on NETFILTER_XTABLES && BRIDGE_NETFILTER && BRIDGE
 	help
 	  Physdev packet matching matches against the physical bridge ports
 	  the IP packet arrived on or will leave by.