diff options
Diffstat (limited to 'net/mac80211/chan.c')
| -rw-r--r-- | net/mac80211/chan.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 78c0d90dd64..7d0baa89c78 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -22,7 +22,7 @@ static void ieee80211_change_chanctx(struct ieee80211_local *local, drv_change_chanctx(local, ctx, IEEE80211_CHANCTX_CHANGE_WIDTH); if (!local->use_chanctx) { - local->_oper_channel_type = cfg80211_get_chandef_type(chandef); + local->_oper_chandef = *chandef; ieee80211_hw_config(local, 0); } } @@ -63,6 +63,7 @@ ieee80211_new_chanctx(struct ieee80211_local *local, enum ieee80211_chanctx_mode mode) { struct ieee80211_chanctx *ctx; + u32 changed; int err; lockdep_assert_held(&local->chanctx_mtx); @@ -76,23 +77,31 @@ ieee80211_new_chanctx(struct ieee80211_local *local, ctx->conf.rx_chains_dynamic = 1; ctx->mode = mode; + /* acquire mutex to prevent idle from changing */ + mutex_lock(&local->mtx); + /* turn idle off *before* setting channel -- some drivers need that */ + changed = ieee80211_idle_off(local); + if (changed) + ieee80211_hw_config(local, changed); + if (!local->use_chanctx) { - local->_oper_channel_type = - cfg80211_get_chandef_type(chandef); - local->_oper_channel = chandef->chan; + local->_oper_chandef = *chandef; ieee80211_hw_config(local, 0); } else { err = drv_add_chanctx(local, ctx); if (err) { kfree(ctx); - return ERR_PTR(err); + ctx = ERR_PTR(err); + + ieee80211_recalc_idle(local); + goto out; } } + /* and keep the mutex held until the new chanctx is on the list */ list_add_rcu(&ctx->list, &local->chanctx_list); - mutex_lock(&local->mtx); - ieee80211_recalc_idle(local); + out: mutex_unlock(&local->mtx); return ctx; @@ -106,7 +115,10 @@ static void ieee80211_free_chanctx(struct ieee80211_local *local, WARN_ON_ONCE(ctx->refcount != 0); if (!local->use_chanctx) { - local->_oper_channel_type = NL80211_CHAN_NO_HT; + struct cfg80211_chan_def *chandef = &local->_oper_chandef; + chandef->width = NL80211_CHAN_WIDTH_20_NOHT; + chandef->center_freq1 = chandef->chan->center_freq; + chandef->center_freq2 = 0; ieee80211_hw_config(local, 0); } else { drv_remove_chanctx(local, ctx); |