diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath5k/base.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index a08bc8a..d8c60c5 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -64,6 +64,10 @@ static int modparam_nohwcrypt; module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444); MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); +static int modparam_all_channels; +module_param_named(all_channels, modparam_all_channels, int, 0444); +MODULE_PARM_DESC(all_channels, "Expose all channels the device can use."); + /******************\ * Internal defines * @@ -862,6 +866,20 @@ ath5k_ieee2mhz(short chan) return 2212 + chan * 20; } +/* + * Returns true for the channel numbers used without all_channels modparam. + */ +static bool ath5k_is_standard_channel(short chan) +{ + return ((chan <= 14) || + /* UNII 1,2 */ + ((chan & 3) == 0 && chan >= 36 && chan <= 64) || + /* midband */ + ((chan & 3) == 0 && chan >= 100 && chan <= 140) || + /* UNII-3 */ + ((chan & 3) == 1 && chan >= 149 && chan <= 165)); +} + static unsigned int ath5k_copy_channels(struct ath5k_hw *ah, struct ieee80211_channel *channels, @@ -899,6 +917,9 @@ ath5k_copy_channels(struct ath5k_hw *ah, if (!ath5k_channel_ok(ah, freq, chfreq)) continue; + if (!modparam_all_channels && !ath5k_is_standard_channel(ch)) + continue; + /* Write channel info and increment counter */ channels[count].center_freq = freq; channels[count].band = (chfreq == CHANNEL_2GHZ) ? |