提交 7f38e5bc 编写于 作者: S Seth Forshee 提交者: John W. Linville

brcmsmac: use channel flags to restrict OFDM

brcmsmac cannot call freq_reg_info() during channel changes as it does
not hold cfg80211_lock, and as a result it generates a lockdep warning.
freq_reg_info() is being used to determine whether OFDM is allowed on
the current channel, so we can avoid the errant call by using the new
IEEE80211_CHAN_NO_OFDM for this purpose instead.
Reported-by: NJosh Boyer <jwboyer@redhat.com>
Signed-off-by: NSeth Forshee <seth.forshee@canonical.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
上级 8c1057e4
......@@ -382,9 +382,7 @@ brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec,
{
struct brcms_c_info *wlc = wlc_cm->wlc;
struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel;
const struct ieee80211_reg_rule *reg_rule;
struct txpwr_limits txpwr;
int ret;
brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr);
......@@ -393,8 +391,7 @@ brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec,
);
/* set or restore gmode as required by regulatory */
ret = freq_reg_info(wlc->wiphy, ch->center_freq, 0, &reg_rule);
if (!ret && (reg_rule->flags & NL80211_RRF_NO_OFDM))
if (ch->flags & IEEE80211_CHAN_NO_OFDM)
brcms_c_set_gmode(wlc, GMODE_LEGACY_B, false);
else
brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false);
......
......@@ -121,7 +121,8 @@ static struct ieee80211_channel brcms_2ghz_chantable[] = {
IEEE80211_CHAN_NO_HT40PLUS),
CHAN2GHZ(14, 2484,
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
IEEE80211_CHAN_NO_OFDM)
};
static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
......
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