return i2c_detect(adapter, &addr_data, pca9539_detect); 
return i2c_probe(adapter, &addr_data, pca9539_detect); 
static int pca9539_attach_adapter(struct i2c_adapter *adapter){	return i2c_detect(adapter, &addr_data, pca9539_detect);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/2ed2dc3c116d26fc6a9384e83d136b15cc203b6c/pca9539.c/clean/drivers/i2c/chips/pca9539.c