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Subject[PATCH net-next] net: dsa: fix build error with devlink build as module
Date
After commit 96567d5dacf4 ("net: dsa: dsa2: Add basic support of devlink")
I see the following link error with CONFIG_NET_DSA=y and CONFIG_NET_DEVLINK=m:

net/built-in.o: In function 'dsa_register_switch':
(.text+0xe226b): undefined reference to `devlink_alloc'
net/built-in.o: In function 'dsa_register_switch':
(.text+0xe2284): undefined reference to `devlink_register'
net/built-in.o: In function 'dsa_register_switch':
(.text+0xe243e): undefined reference to `devlink_port_register'
net/built-in.o: In function 'dsa_register_switch':
(.text+0xe24e1): undefined reference to `devlink_port_register'
net/built-in.o: In function 'dsa_register_switch':
(.text+0xe24fa): undefined reference to `devlink_port_type_eth_set'
net/built-in.o: In function 'dsa_dst_unapply.part.8':
dsa2.c:(.text.unlikely+0x345): undefined reference to 'devlink_port_unregister'
dsa2.c:(.text.unlikely+0x36c): undefined reference to 'devlink_port_unregister'
dsa2.c:(.text.unlikely+0x38e): undefined reference to 'devlink_port_unregister'
dsa2.c:(.text.unlikely+0x3f2): undefined reference to 'devlink_unregister'
dsa2.c:(.text.unlikely+0x3fb): undefined reference to 'devlink_free'

Fix this by adding a dependency on MAY_USE_DEVLINK so that CONFIG_NET_DSA
get switched to be build as module when CONFIG_NET_DEVLINK=m.

Fixes: 96567d5dacf4 ("net: dsa: dsa2: Add basic support of devlink")
Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com>
---
net/dsa/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
index 9649238eef40..da4d64f432db 100644
--- a/net/dsa/Kconfig
+++ b/net/dsa/Kconfig
@@ -6,7 +6,7 @@ config HAVE_NET_DSA

config NET_DSA
tristate "Distributed Switch Architecture"
- depends on HAVE_NET_DSA
+ depends on HAVE_NET_DSA && MAY_USE_DEVLINK
select NET_SWITCHDEV
select PHYLIB
---help---
--
2.11.0
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