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/pcm179x-i2c.c:33:34: warning: ‘pcm179x_of_match’ defined but not used [-Wunused-const-variable=]
Signed-off-by: Krzysztof Kozlowski krzk@kernel.org --- sound/soc/codecs/pcm179x-i2c.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/pcm179x-i2c.c b/sound/soc/codecs/pcm179x-i2c.c index 36e01678bef4..34a3d596f288 100644 --- a/sound/soc/codecs/pcm179x-i2c.c +++ b/sound/soc/codecs/pcm179x-i2c.c @@ -30,11 +30,13 @@ static int pcm179x_i2c_probe(struct i2c_client *client, return pcm179x_common_init(&client->dev, regmap); }
+#ifdef CONFIG_OF static const struct of_device_id pcm179x_of_match[] = { { .compatible = "ti,pcm1792a", }, { } }; MODULE_DEVICE_TABLE(of, pcm179x_of_match); +#endif
static const struct i2c_device_id pcm179x_i2c_ids[] = { { "pcm179x", 0 },