From 8881d206f4e68b564c2c5f50fc717086fc3e827a Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Mon, 28 Feb 2022 17:26:00 -0700
Subject: [PATCH] ath: Suppress set but unused warnings

The ath driver has a lot of these warnings. It's an older driver, so
just supress these warnings until they can be fixed. They are a mix of
simple dead stores, debubgging output and stuff that would require
careful study to know if its safe to remove the access or not (there are
likely very few of the latter, but if there are any they are latent bugs
that compiler could optimize away). Since I have no ath hardware to test
on anymore, take the conservative approach.

Sponsored by:		Netflix
---
 sys/conf/files                      | 274 ++++++++++++++--------------
 sys/conf/kern.pre.mk                |   4 +-
 sys/modules/ath/Makefile            |   2 +
 sys/modules/ath_ahb/Makefile        |   2 +
 sys/modules/ath_dfs/Makefile        |   2 +
 sys/modules/ath_hal/Makefile        |   1 +
 sys/modules/ath_hal_ar5210/Makefile |   2 +
 sys/modules/ath_hal_ar5211/Makefile |   2 +
 sys/modules/ath_hal_ar5212/Makefile |   2 +
 sys/modules/ath_hal_ar5416/Makefile |   2 +
 sys/modules/ath_hal_ar9300/Makefile |   1 +
 sys/modules/ath_main/Makefile       |   2 +
 sys/modules/ath_pci/Makefile        |   2 +
 sys/modules/ath_rate/Makefile       |   2 +
 14 files changed, 162 insertions(+), 138 deletions(-)

diff --git a/sys/conf/files b/sys/conf/files
index 74f15f867213..38272255e8a1 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -918,377 +918,377 @@ dev/ata/chipsets/ata-sis.c	optional ata pci | atasis
 dev/ata/chipsets/ata-via.c	optional ata pci | atavia
 #
 dev/ath/if_ath_pci.c		optional ath_pci pci \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 #
 dev/ath/if_ath_ahb.c		optional ath_ahb \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 #
 dev/ath/if_ath.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_alq.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_beacon.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_btcoex.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_btcoex_mci.c	optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_debug.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_descdma.c	optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_keycache.c	optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_ioctl.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_led.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_lna_div.c	optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_tx.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_tx_edma.c	optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_tx_ht.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_tdma.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_sysctl.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_rx.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_rx_edma.c	optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/if_ath_spectral.c	optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ah_osdep.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 #
 dev/ath/ath_hal/ah.c		optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ath_hal/ah_eeprom_v1.c	optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ath_hal/ah_eeprom_v3.c	optional ath_hal | ath_ar5211 | ath_ar5212 \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ath_hal/ah_eeprom_v14.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ath_hal/ah_eeprom_v4k.c \
 	optional ath_hal | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ath_hal/ah_eeprom_9287.c \
 	optional ath_hal | ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ath_hal/ah_regdomain.c	optional ath \
 	compile-with "${NORMAL_C} ${NO_WSHIFT_COUNT_NEGATIVE} ${NO_WSHIFT_COUNT_OVERFLOW} -I$S/dev/ath"
 # ar5210
 dev/ath/ath_hal/ar5210/ar5210_attach.c		optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_beacon.c		optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_interrupts.c	optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_keycache.c	optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_misc.c		optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_phy.c		optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_power.c		optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_recv.c		optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_reset.c		optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5210/ar5210_xmit.c		optional ath_hal | ath_ar5210 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 # ar5211
 dev/ath/ath_hal/ar5211/ar5211_attach.c		optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_beacon.c		optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_interrupts.c	optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_keycache.c	optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_misc.c		optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_phy.c		optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_power.c		optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_recv.c		optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_reset.c		optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5211/ar5211_xmit.c		optional ath_hal | ath_ar5211 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 # ar5212
 dev/ath/ath_hal/ar5212/ar5212_ani.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_attach.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_beacon.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_eeprom.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_gpio.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_interrupts.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_keycache.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_misc.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_phy.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_power.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_recv.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_reset.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_rfgain.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5212_xmit.c \
 	optional ath_hal | ath_ar5212 | ath_ar5416 | ath_ar9160 | ath_ar9280 | \
 	ath_ar9285 ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 # ar5416 (depends on ar5212)
 dev/ath/ath_hal/ar5416/ar5416_ani.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_attach.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_beacon.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_btcoex.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_cal.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_cal_iq.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_cal_adcgain.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_cal_adcdc.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_eeprom.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_gpio.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_interrupts.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_keycache.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_misc.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_phy.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_power.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_radar.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_recv.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_reset.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_spectral.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar5416_xmit.c \
 	optional ath_hal | ath_ar5416 | ath_ar9160 | ath_ar9280 | ath_ar9285 | \
 	ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 # ar9130 (depends upon ar5416) - also requires AH_SUPPORT_AR9130
 #
 # Since this is an embedded MAC SoC, there's no need to compile it into the
 # default HAL.
 dev/ath/ath_hal/ar9001/ar9130_attach.c optional ath_ar9130 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9001/ar9130_phy.c optional ath_ar9130 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9001/ar9130_eeprom.c optional ath_ar9130 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 # ar9160 (depends on ar5416)
 dev/ath/ath_hal/ar9001/ar9160_attach.c optional ath_hal | ath_ar9160 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 # ar9280 (depends on ar5416)
 dev/ath/ath_hal/ar9002/ar9280_attach.c optional ath_hal | ath_ar9280 | \
 	ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9280_olc.c optional ath_hal | ath_ar9280 | \
 	ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 # ar9285 (depends on ar5416 and ar9280)
 dev/ath/ath_hal/ar9002/ar9285_attach.c optional ath_hal | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9285_btcoex.c optional ath_hal | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9285_reset.c optional ath_hal | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9285_cal.c optional ath_hal | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9285_phy.c optional ath_hal | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9285_diversity.c optional ath_hal | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 # ar9287 (depends on ar5416)
 dev/ath/ath_hal/ar9002/ar9287_attach.c optional ath_hal | ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9287_reset.c optional ath_hal | ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9287_cal.c optional ath_hal | ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9287_olc.c optional ath_hal | ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 
 # ar9300
 contrib/dev/ath/ath_hal/ar9300/ar9300_ani.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_attach.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_beacon.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_eeprom.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal ${NO_WCONSTANT_CONVERSION}"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal ${NO_WCONSTANT_CONVERSION}"
 contrib/dev/ath/ath_hal/ar9300/ar9300_freebsd.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_gpio.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_interrupts.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_keycache.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_mci.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_misc.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_paprd.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_phy.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_power.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_radar.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_radio.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_recv.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_recv_ds.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_reset.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal ${NO_WSOMETIMES_UNINITIALIZED} -Wno-unused-function"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal ${NO_WSOMETIMES_UNINITIALIZED} -Wno-unused-function"
 contrib/dev/ath/ath_hal/ar9300/ar9300_stub.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_stub_funcs.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_spectral.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_timer.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_xmit.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 contrib/dev/ath/ath_hal/ar9300/ar9300_xmit_ds.c optional ath_hal | ath_ar9300 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal"
 
 # rf backends
 dev/ath/ath_hal/ar5212/ar2316.c	optional ath_rf2316 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar2317.c	optional ath_rf2317 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar2413.c	optional ath_hal | ath_rf2413 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar2425.c	optional ath_hal | ath_rf2425 | ath_rf2417 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5111.c	optional ath_hal | ath_rf5111 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5112.c	optional ath_hal | ath_rf5112 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5212/ar5413.c	optional ath_hal | ath_rf5413 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar5416/ar2133.c optional ath_hal | ath_ar5416 | \
 	ath_ar9130 | ath_ar9160 | ath_ar9280 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9280.c optional ath_hal | ath_ar9280 | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9285.c optional ath_hal | ath_ar9285 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 dev/ath/ath_hal/ar9002/ar9287.c optional ath_hal | ath_ar9287 \
-	compile-with "${NORMAL_C} -I$S/dev/ath -I$S/dev/ath/ath_hal"
+	compile-with "${ATH_C} -I$S/dev/ath/ath_hal"
 
 # ath rate control algorithms
 dev/ath/ath_rate/amrr/amrr.c	optional ath_rate_amrr \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ath_rate/onoe/onoe.c	optional ath_rate_onoe \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 dev/ath/ath_rate/sample/sample.c	optional ath_rate_sample \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 # ath DFS modules
 dev/ath/ath_dfs/null/dfs_null.c	optional ath \
-	compile-with "${NORMAL_C} -I$S/dev/ath"
+	compile-with "${ATH_C}"
 #
 dev/backlight/backlight_if.m		optional backlight | compat_linuxkpi
 dev/backlight/backlight.c		optional backlight | compat_linuxkpi
diff --git a/sys/conf/kern.pre.mk b/sys/conf/kern.pre.mk
index 5a786c81324d..f36613f8a609 100644
--- a/sys/conf/kern.pre.mk
+++ b/sys/conf/kern.pre.mk
@@ -262,7 +262,9 @@ ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${.IMPSRC}
 ZFS_RPC_C=	${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${.IMPSRC}
 ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 
-
+# ATH driver
+ATH_CFLAGS=	-I${SRCTOP}/sys/dev/ath -Wno-unused-but-set-variable
+ATH_C=		${CC} -c ${CFLAGS} ${WERROR} ${ATH_CFLAGS} ${.IMPSRC}
 
 # Special flags for managing the compat compiles for DTrace
 DTRACE_CFLAGS=	-DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
diff --git a/sys/modules/ath/Makefile b/sys/modules/ath/Makefile
index cf46550b5f80..5697a6464e15 100644
--- a/sys/modules/ath/Makefile
+++ b/sys/modules/ath/Makefile
@@ -41,3 +41,5 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_ahb/Makefile b/sys/modules/ath_ahb/Makefile
index ad3316d18623..ee2fe2adb5da 100644
--- a/sys/modules/ath_ahb/Makefile
+++ b/sys/modules/ath_ahb/Makefile
@@ -39,3 +39,5 @@ SRCS+=	device_if.h bus_if.h opt_wlan.h opt_ath.h opt_ah.h
 CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_dfs/Makefile b/sys/modules/ath_dfs/Makefile
index 3e561eddf607..db49f6b20109 100644
--- a/sys/modules/ath_dfs/Makefile
+++ b/sys/modules/ath_dfs/Makefile
@@ -45,3 +45,5 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_hal/Makefile b/sys/modules/ath_hal/Makefile
index 902c32a95b19..92beae8420b6 100644
--- a/sys/modules/ath_hal/Makefile
+++ b/sys/modules/ath_hal/Makefile
@@ -47,3 +47,4 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 EXPORT_SYMS=	YES
 
 CWARNFLAGS.ah_regdomain.c=	${NO_WSHIFT_COUNT_NEGATIVE} ${NO_WSHIFT_COUNT_OVERFLOW}
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_hal_ar5210/Makefile b/sys/modules/ath_hal_ar5210/Makefile
index 9dac60cd96fe..f327b980ef5b 100644
--- a/sys/modules/ath_hal_ar5210/Makefile
+++ b/sys/modules/ath_hal_ar5210/Makefile
@@ -51,3 +51,5 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_hal_ar5211/Makefile b/sys/modules/ath_hal_ar5211/Makefile
index c922828e212b..19788ab835fa 100644
--- a/sys/modules/ath_hal_ar5211/Makefile
+++ b/sys/modules/ath_hal_ar5211/Makefile
@@ -53,3 +53,5 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_hal_ar5212/Makefile b/sys/modules/ath_hal_ar5212/Makefile
index c9cc1ae5f067..93b47315ba4c 100644
--- a/sys/modules/ath_hal_ar5212/Makefile
+++ b/sys/modules/ath_hal_ar5212/Makefile
@@ -58,3 +58,5 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_hal_ar5416/Makefile b/sys/modules/ath_hal_ar5416/Makefile
index 00b7c438c695..a3dbbd041cfc 100644
--- a/sys/modules/ath_hal_ar5416/Makefile
+++ b/sys/modules/ath_hal_ar5416/Makefile
@@ -89,3 +89,5 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_hal_ar9300/Makefile b/sys/modules/ath_hal_ar9300/Makefile
index c8c5a9c33c6f..7d709d319a85 100644
--- a/sys/modules/ath_hal_ar9300/Makefile
+++ b/sys/modules/ath_hal_ar9300/Makefile
@@ -57,3 +57,4 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 # AR9300 HAL build overrides, as there's still some code to tidy up
 CWARNFLAGS.ar9300_eeprom.c=	${NO_WCONSTANT_CONVERSION}
 CWARNFLAGS.ar9300_reset.c=	${NO_WSOMETIMES_UNINITIALIZED} -Wno-unused-function
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_main/Makefile b/sys/modules/ath_main/Makefile
index 99cd18d5b265..7971df14c905 100644
--- a/sys/modules/ath_main/Makefile
+++ b/sys/modules/ath_main/Makefile
@@ -44,8 +44,10 @@ SRCS+=	device_if.h bus_if.h pci_if.h opt_inet.h opt_ath.h opt_ah.h opt_wlan.h
 
 CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
+CFLAGS+=  ${ATH_CFLAGS}
 
 .include <bsd.kmod.mk>
 
 # XXX Work around clang warnings, until maintainer approves fix.
 CWARNFLAGS.if_ath.c=		${NO_WSOMETIMES_UNINITIALIZED}
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_pci/Makefile b/sys/modules/ath_pci/Makefile
index 516d14e127eb..7ed67fffca65 100644
--- a/sys/modules/ath_pci/Makefile
+++ b/sys/modules/ath_pci/Makefile
@@ -39,3 +39,5 @@ SRCS+=	device_if.h bus_if.h pci_if.h opt_wlan.h opt_ath.h opt_ah.h
 CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable
diff --git a/sys/modules/ath_rate/Makefile b/sys/modules/ath_rate/Makefile
index 2b36ecf948c0..c6be915bc744 100644
--- a/sys/modules/ath_rate/Makefile
+++ b/sys/modules/ath_rate/Makefile
@@ -55,3 +55,5 @@ CFLAGS+=  -I. -I${SRCTOP}/sys/dev/ath -I${SRCTOP}/sys/dev/ath/ath_hal
 CFLAGS+=  -I. -I${SRCTOP}/sys/contrib/dev/ath/ath_hal/
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	-Wno-unused-but-set-variable