Commit a99168ee authored by Nick Kossifidis's avatar Nick Kossifidis Committed by John W. Linville
Browse files

ath5k: Disable fast channel switching by default

Disable fast channel change by default on AR2413/AR5413 due to
some bug reports (it still works for me but it's better to be safe).
Add a module parameter "fastchanswitch" in case anyone wants to enable
it and play with it.
Signed-off-by: default avatarNick Kossifidis <>
Tested-by: default avatarSedat Dilek <>
Signed-off-by: default avatarJohn W. Linville <>
parent bdf492f5
......@@ -72,6 +72,11 @@ static int modparam_all_channels;
module_param_named(all_channels, modparam_all_channels, bool, S_IRUGO);
MODULE_PARM_DESC(all_channels, "Expose all channels the device can use.");
static int modparam_fastchanswitch;
module_param_named(fastchanswitch, modparam_fastchanswitch, bool, S_IRUGO);
MODULE_PARM_DESC(fastchanswitch, "Enable fast channel switching for AR2413/AR5413 radios.");
/* Module info */
MODULE_AUTHOR("Jiri Slaby");
MODULE_AUTHOR("Nick Kossifidis");
......@@ -2686,6 +2691,7 @@ ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan,
struct ath5k_hw *ah = sc->ah;
struct ath_common *common = ath5k_hw_common(ah);
int ret, ani_mode;
bool fast;
ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "resetting\n");
......@@ -2705,7 +2711,10 @@ ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan,
if (chan)
sc->curchan = chan;
ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, chan != NULL,
fast = ((chan != NULL) && modparam_fastchanswitch) ? 1 : 0;
ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, fast,
if (ret) {
ATH5K_ERR(sc, "can't reset hardware (%d)\n", ret);
......@@ -1124,8 +1124,11 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
/* Non fatal, can happen eg.
* on mode change */
ret = 0;
} else
} else {
"fast chan change successful\n");
return 0;
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