diff options
Diffstat (limited to 'package/kernel/mac80211/patches/309-ath9k-prevent-early-IRQs-from-accessing-hardware.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/309-ath9k-prevent-early-IRQs-from-accessing-hardware.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/309-ath9k-prevent-early-IRQs-from-accessing-hardware.patch b/package/kernel/mac80211/patches/309-ath9k-prevent-early-IRQs-from-accessing-hardware.patch new file mode 100644 index 0000000000..6af94c8ea6 --- /dev/null +++ b/package/kernel/mac80211/patches/309-ath9k-prevent-early-IRQs-from-accessing-hardware.patch @@ -0,0 +1,38 @@ +From: Felix Fietkau <nbd@openwrt.org> +Date: Thu, 13 Nov 2014 18:27:47 +0100 +Subject: [PATCH] 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> +--- + +--- a/drivers/net/wireless/ath/ath9k/init.c ++++ b/drivers/net/wireless/ath/ath9k/init.c +@@ -513,10 +513,14 @@ static int ath9k_init_softc(u16 devid, s + 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); +@@ -876,9 +880,6 @@ int ath9k_init_device(u16 devid, struct + 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); |