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ath9k: prevent early IRQs from accessing hardware 

IRQs are suppressed if ah == NULL and ATH_OP_INVALID being set in
common->op_flags. Close a short time window between those two.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2014-11-30 21:58:30 +01:00 committed by John W. Linville
parent 9e4982f6a5
commit 56bdbe0d6a
1 changed files with 5 additions and 4 deletions
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9
drivers/net/wireless/ath/ath9k/init.c
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@ -532,10 +532,14 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
ah->reg_ops.read = ath9k_ioread32;
ah->reg_ops.write = ath9k_iowrite32;
ah->reg_ops.rmw = ath9k_reg_rmw;
sc->sc_ah = ah;
pCap = &ah->caps;
common = ath9k_hw_common(ah);
/* Will be cleared in ath9k_start() */
set_bit(ATH_OP_INVALID, &common->op_flags);
sc->sc_ah = ah;
sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET);
sc->tx99_power = MAX_RATE_POWER + 1;
init_waitqueue_head(&sc->tx_wait);
@ -896,9 +900,6 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc,
common = ath9k_hw_common(ah);
ath9k_set_hw_capab(sc, hw);
/* Will be cleared in ath9k_start() */
set_bit(ATH_OP_INVALID, &common->op_flags);
/* Initialize regulatory */
error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
ath9k_reg_notifier);