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/pcm1789-i2c.c:36:34: warning: ‘pcm1789_of_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> --- sound/soc/codecs/pcm1789-i2c.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/codecs/pcm1789-i2c.c b/sound/soc/codecs/pcm1789-i2c.c index 327ec584f240..7a6be45f8149 100644 --- a/sound/soc/codecs/pcm1789-i2c.c +++ b/sound/soc/codecs/pcm1789-i2c.c @@ -33,11 +33,13 @@ static int pcm1789_i2c_remove(struct i2c_client *client) return pcm1789_common_exit(&client->dev); } +#ifdef CONFIG_OF static const struct of_device_id pcm1789_of_match[] = { { .compatible = "ti,pcm1789", }, { } }; MODULE_DEVICE_TABLE(of, pcm1789_of_match); +#endif static const struct i2c_device_id pcm1789_i2c_ids[] = { { "pcm1789", 0 }, -- 2.25.1