CHAIN_NOISE_DELTA_GAIN_INIT_VAL  920 drivers/net/wireless/intel/iwlegacy/common.h #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
CHAIN_NOISE_DELTA_GAIN_INIT_VAL  295 drivers/net/wireless/intel/iwlwifi/dvm/dev.h #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4