The driver can match by multiple methods. Its of_device_id table is referenced via of_match_ptr() so it will be unused for !CONFIG_OF builds: sound/soc/codecs/da9055.c:1522:34: warning: ‘da9055_of_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> --- sound/soc/codecs/da9055.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/codecs/da9055.c b/sound/soc/codecs/da9055.c index b0d9ca6de685..aed92f615b02 100644 --- a/sound/soc/codecs/da9055.c +++ b/sound/soc/codecs/da9055.c @@ -1519,11 +1519,13 @@ static const struct i2c_device_id da9055_i2c_id[] = { }; MODULE_DEVICE_TABLE(i2c, da9055_i2c_id); +#ifdef CONFIG_OF static const struct of_device_id da9055_of_match[] = { { .compatible = "dlg,da9055-codec", }, { } }; MODULE_DEVICE_TABLE(of, da9055_of_match); +#endif /* I2C codec control layer */ static struct i2c_driver da9055_i2c_driver = { -- 2.25.1