SILICON_B_STEP 219 drivers/net/wireless/intel/iwlwifi/iwl-drv.c (CSR_HW_REV_STEP(drv->trans->hw_rev) != SILICON_B_STEP && SILICON_B_STEP 1075 drivers/net/wireless/intel/iwlwifi/pcie/drv.c if (CSR_HW_RF_STEP(iwl_trans->hw_rf_id) == SILICON_B_STEP)