../drivers/mfd/zl3073x-i2c.c: In function ‘zl3073x_i2c_probe’: ../drivers/mfd/zl3073x-i2c.c:23:37: warning: variable ‘id’ set but not used [-Wunused-but-set-variable] 23 | const struct i2c_device_id *id; | ^~ ../drivers/mfd/zl3073x-spi.c: In function ‘zl3073x_spi_probe’: ../drivers/mfd/zl3073x-spi.c:24:37: warning: variable ‘id’ set but not used [-Wunused-but-set-variable] 24 | const struct spi_device_id *id; | ^~ ../drivers/mfd/zl3073x-core.c:39:28: warning: symbol 'zl3073x_regmap_config' was not declared. Should it be static? ../drivers/mfd/zl3073x-spi.c: In function ‘zl3073x_spi_probe’: ../drivers/mfd/zl3073x-spi.c:24:37: warning: variable ‘id’ set but not used [-Wunused-but-set-variable] 24 | const struct spi_device_id *id; | ^~ ../drivers/mfd/zl3073x-i2c.c: In function ‘zl3073x_i2c_probe’: ../drivers/mfd/zl3073x-i2c.c:23:37: warning: variable ‘id’ set but not used [-Wunused-but-set-variable] 23 | const struct i2c_device_id *id; | ^~ ../drivers/mfd/zl3073x-core.c:39:28: warning: symbol 'zl3073x_regmap_config' was not declared. Should it be static?