diff options
| author |   Johannes Berg <johannes.berg@intel.com> | 2013-04-22 15:31:43 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-04-22 15:31:43 +0200 |
| commit | a42c74ee608a424342ef7069ccddf196d873040c (patch) | |
| tree | 75adfb9f5e06ebb7c7d5d5e5a5408fa0d6d504b9 /net/mac80211/chan.c | |
| parent | nl80211: allow using wdev identifiers to get scan results (diff) | |
| parent | b43: use bcma_pmu_spuravoid_pllupdate() (diff) | |
| download | linux-dev-a42c74ee608a424342ef7069ccddf196d873040c.tar.xz linux-dev-a42c74ee608a424342ef7069ccddf196d873040c.zip | |
Merge remote-tracking branch 'wireless-next/master' into mac80211-next
Diffstat (limited to 'net/mac80211/chan.c')
| -rw-r--r-- | net/mac80211/chan.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 166165efd8e2..03e8d2e3270e 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -79,6 +79,7 @@ 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); @@ -95,6 +96,13 @@ ieee80211_new_chanctx(struct ieee80211_local *local, if (!local->use_chanctx) local->hw.conf.radar_enabled = ctx->conf.radar_enabled; + /* 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_chandef = *chandef; ieee80211_hw_config(local, 0); @@ -102,14 +110,17 @@ ieee80211_new_chanctx(struct ieee80211_local *local, 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; |