[PATCH] net: mscc: ocelot: add ETHTOOL_NETLINK dependency

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

The driver now directly calls into ethtool code, which fails if
ethtool is disabled:

arm-linux-gnueabi-ld: drivers/net/ethernet/mscc/ocelot_stats.o: in function `ocelot_port_get_pause_stats':
ocelot_stats.c:(.text+0xe54): undefined reference to `ethtool_aggregate_pause_stats'
arm-linux-gnueabi-ld: drivers/net/ethernet/mscc/ocelot_stats.o: in function `ocelot_port_get_rmon_stats':
ocelot_stats.c:(.text+0x1090): undefined reference to `ethtool_aggregate_rmon_stats'
arm-linux-gnueabi-ld: drivers/net/ethernet/mscc/ocelot_stats.o: in function `ocelot_port_get_eth_ctrl_stats':
ocelot_stats.c:(.text+0x1228): undefined reference to `ethtool_aggregate_ctrl_stats'
arm-linux-gnueabi-ld: drivers/net/ethernet/mscc/ocelot_stats.o: in function `ocelot_port_get_eth_mac_stats':
ocelot_stats.c:(.text+0x13a8): undefined reference to `ethtool_aggregate_mac_stats'
arm-linux-gnueabi-ld: drivers/net/ethernet/mscc/ocelot_stats.o: in function `ocelot_port_get_eth_phy_stats':
ocelot_stats.c:(.text+0x1540): undefined reference to `ethtool_aggregate_phy_stats'

Add a dependency on ETHTOOL_NETLINK, since that controls the
compilation of the ethtool stats code. It would probably be possible
to have a more fine-grained symbol there, but in practice this is
already required.

Fixes: 6505b6805655 ("net: mscc: ocelot: add MAC Merge layer support for VSC9959")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/net/dsa/ocelot/Kconfig    | 2 ++
 drivers/net/ethernet/mscc/Kconfig | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/net/dsa/ocelot/Kconfig b/drivers/net/dsa/ocelot/Kconfig
index 08db9cf76818..9b0624a1837e 100644
--- a/drivers/net/dsa/ocelot/Kconfig
+++ b/drivers/net/dsa/ocelot/Kconfig
@@ -7,6 +7,7 @@ config NET_DSA_MSCC_FELIX
 	depends on HAS_IOMEM
 	depends on PTP_1588_CLOCK_OPTIONAL
 	depends on NET_SCH_TAPRIO || NET_SCH_TAPRIO=n
+	depends on ETHTOOL_NETLINK
 	select MSCC_OCELOT_SWITCH_LIB
 	select NET_DSA_TAG_OCELOT_8021Q
 	select NET_DSA_TAG_OCELOT
@@ -22,6 +23,7 @@ config NET_DSA_MSCC_SEVILLE
 	depends on NET_VENDOR_MICROSEMI
 	depends on HAS_IOMEM
 	depends on PTP_1588_CLOCK_OPTIONAL
+	depends on ETHTOOL_NETLINK
 	select MDIO_MSCC_MIIM
 	select MSCC_OCELOT_SWITCH_LIB
 	select NET_DSA_TAG_OCELOT_8021Q
diff --git a/drivers/net/ethernet/mscc/Kconfig b/drivers/net/ethernet/mscc/Kconfig
index 8dd8c7f425d2..8b1a145971b2 100644
--- a/drivers/net/ethernet/mscc/Kconfig
+++ b/drivers/net/ethernet/mscc/Kconfig
@@ -13,6 +13,7 @@ if NET_VENDOR_MICROSEMI
 
 # Users should depend on NET_SWITCHDEV, HAS_IOMEM, BRIDGE
 config MSCC_OCELOT_SWITCH_LIB
+	depends on ETHTOOL_NETLINK
 	select NET_DEVLINK
 	select REGMAP_MMIO
 	select PACKING
@@ -25,6 +26,7 @@ config MSCC_OCELOT_SWITCH_LIB
 config MSCC_OCELOT_SWITCH
 	tristate "Ocelot switch driver"
 	depends on PTP_1588_CLOCK_OPTIONAL
+	depends on ETHTOOL_NETLINK
 	depends on BRIDGE || BRIDGE=n
 	depends on NET_SWITCHDEV
 	depends on HAS_IOMEM
-- 
2.39.0