The Kconfig symbol for the I2C mode of the LAN9303 driver selects
REGMAP_I2C. This symbol depends on I2C but the driver doesen't has a
dependency on I2C.
With CONFIG_I2C=n kconfig fails to select REGMAP_I2C and we get the
following warning:
warning: (NET_DSA_SMSC_LAN9303_I2C) selects REGMAP_I2C which has unmet direct
dependencies (I2C)
This results in a build failure because the regmap-i2c functions aren't
available:
drivers/base/regmap/regmap-i2c.c: In function 'regmap_smbus_byte_reg_read':
drivers/base/regmap/regmap-i2c.c:29:8: error: implicit declaration of function
'i2c_smbus_read_byte_data' [-Werror=implicit-function-declaration]
drivers/base/regmap/regmap-i2c.c: In function 'regmap_smbus_byte_reg_write':
drivers/base/regmap/regmap-i2c.c:47:9: error: implicit declaration of function
'i2c_smbus_write_byte_data' [-Werror=implicit-function-declaration]
...
Fix this by adding a kconfig dependency on the I2C subsystem.
Fixes: be4e119f9914 ("net: dsa: LAN9303: add I2C managed mode support")
Signed-off-by: Tobias Regnery <tobias.regn...@gmail.com>
---
drivers/net/dsa/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/dsa/Kconfig b/drivers/net/dsa/Kconfig
index 131a5b1cbfc8..862ee22303c2 100644
--- a/drivers/net/dsa/Kconfig
+++ b/drivers/net/dsa/Kconfig
@@ -59,7 +59,7 @@ config NET_DSA_SMSC_LAN9303
config NET_DSA_SMSC_LAN9303_I2C
tristate "SMSC/Microchip LAN9303 3-ports 10/100 ethernet switch in I2C
managed mode"
- depends on NET_DSA
+ depends on NET_DSA && I2C
select NET_DSA_SMSC_LAN9303
select REGMAP_I2C
---help---
--
2.11.0
