From 2ab631f48cac65864a61007215187cb7511b0846 Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Sat, 16 Jun 2012 07:47:53 -0500 Subject: [PATCH] brcm80211: smac: enable/disable radio on regulatory updates Currently the radio disable state is only updated during initialization, and it's only checked against the internal world domain. This is unnecessary, as there are always valid channels against this domain. Instead, check whether any channels are enabled in the regulatory notifier and update the radio state accordingly. Reviewed-by: Arend Van Spriel Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Seth Forshee Signed-off-by: John W. Linville --- .../net/wireless/brcm80211/brcmsmac/channel.c | 67 +++++++------------ 1 file changed, 26 insertions(+), 41 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmsmac/channel.c b/drivers/net/wireless/brcm80211/brcmsmac/channel.c index 65ef60bf9c8..3951ccf22c9 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/channel.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/channel.c @@ -677,46 +677,6 @@ brcms_c_channel_min_txpower_limits_with_local_constraint( } -/* Update the radio state (enable/disable) and tx power targets - * based on a new set of channel/regulatory information - */ -static void brcms_c_channels_commit(struct brcms_cm_info *wlc_cm) -{ - struct brcms_c_info *wlc = wlc_cm->wlc; - uint chan; - - /* search for the existence of any valid channel */ - for (chan = 0; chan < MAXCHANNEL; chan++) { - if (brcms_c_valid_channel20_db(wlc->cmi, chan)) - break; - } - if (chan == MAXCHANNEL) - chan = INVCHANNEL; - - /* - * based on the channel search above, set or - * clear WL_RADIO_COUNTRY_DISABLE. - */ - if (chan == INVCHANNEL) { - /* - * country/locale with no valid channels, set - * the radio disable bit - */ - mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); - wiphy_err(wlc->wiphy, "wl%d: %s: no valid channel for \"%s\" " - "nbands %d bandlocked %d\n", wlc->pub->unit, - __func__, wlc_cm->world_regd->regdomain->alpha2, - wlc->pub->_nbands, wlc->bandlocked); - } else if (mboolisset(wlc->pub->radio_disabled, - WL_RADIO_COUNTRY_DISABLE)) { - /* - * country/locale with valid channel, clear - * the radio disable bit - */ - mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); - } -} - static int brcms_c_channels_init(struct brcms_cm_info *wlc_cm, const struct country_info *country) @@ -762,7 +722,6 @@ brcms_c_channels_init(struct brcms_cm_info *wlc_cm, } brcms_c_quiet_channels_reset(wlc_cm); - brcms_c_channels_commit(wlc_cm); return 0; } @@ -1235,12 +1194,38 @@ static int brcms_reg_notifier(struct wiphy *wiphy, struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); struct brcms_info *wl = hw->priv; struct brcms_c_info *wlc = wl->wlc; + struct ieee80211_supported_band *sband; + struct ieee80211_channel *ch; + int band, i; + bool ch_found = false; brcms_reg_apply_radar_flags(wiphy); if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) brcms_reg_apply_beaconing_flags(wiphy, request->initiator); + /* Disable radio if all channels disallowed by regulatory */ + for (band = 0; !ch_found && band < IEEE80211_NUM_BANDS; band++) { + sband = wiphy->bands[band]; + if (!sband) + continue; + + for (i = 0; !ch_found && i < sband->n_channels; i++) { + ch = &sband->channels[i]; + + if (!(ch->flags & IEEE80211_CHAN_DISABLED)) + ch_found = true; + } + } + + if (ch_found) { + mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); + } else { + mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); + wiphy_err(wlc->wiphy, "wl%d: %s: no valid channel for \"%s\"\n", + wlc->pub->unit, __func__, request->alpha2); + } + if (wlc->pub->_nbands > 1 || wlc->band->bandtype == BRCM_BAND_2G) wlc_phy_chanspec_ch14_widefilter_set(wlc->band->pi, brcms_c_japan_ccode(request->alpha2)); -- 2.46.0