On Sat, Apr 18, 2020 at 05:08:53PM +0800, YueHaibing wrote: > sound/soc/codecs/wm8900.o: In function `wm8900_i2c_probe': > wm8900.c:(.text+0xa36): undefined reference to `__devm_regmap_init_i2c' > sound/soc/codecs/wm8900.o: In function `wm8900_modinit': > wm8900.c:(.init.text+0xb): undefined reference to `i2c_register_driver' > sound/soc/codecs/wm8900.o: In function `wm8900_exit': > wm8900.c:(.exit.text+0x8): undefined reference to `i2c_del_driver' > sound/soc/codecs/wm8988.o: In function `wm8988_i2c_probe': > wm8988.c:(.text+0x857): undefined reference to `__devm_regmap_init_i2c' > sound/soc/codecs/wm8988.o: In function `wm8988_modinit': > wm8988.c:(.init.text+0xb): undefined reference to `i2c_register_driver' > sound/soc/codecs/wm8988.o: In function `wm8988_exit': > wm8988.c:(.exit.text+0x8): undefined reference to `i2c_del_driver' > sound/soc/codecs/wm8995.o: In function `wm8995_i2c_probe': > wm8995.c:(.text+0x1c4f): undefined reference to `__devm_regmap_init_i2c' > sound/soc/codecs/wm8995.o: In function `wm8995_modinit': > wm8995.c:(.init.text+0xb): undefined reference to `i2c_register_driver' > sound/soc/codecs/wm8995.o: In function `wm8995_exit': > wm8995.c:(.exit.text+0x8): undefined reference to `i2c_del_driver' > > Add missing I2C dependency to fix this. > This doesn't look like the right fix there, all these parts can be used on SPI so should be usable without I2C build in. Thanks, Charles