diff options
| author | Chaitanya T K <chaitanya.mgit@gmail.com> | 2015-10-30 23:16:15 +0530 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-11-03 11:15:48 +0100 |
| commit | dcae9e0203dfd887a7413cd38d1f87aaac1127f4 (patch) | |
| tree | c3a0d643ad47795a17d0890ac410025dffc623ff /net | |
| parent | ef95d8ba384781ce574c10f87b97d6bab2659735 (diff) | |
| download | lwn-dcae9e0203dfd887a7413cd38d1f87aaac1127f4.tar.gz lwn-dcae9e0203dfd887a7413cd38d1f87aaac1127f4.zip | |
mac80211: document sleep requirements for channel context ops
Channel context driver operations can sleep, so add might_sleep()
and document this.
Signed-off-by: Chaitanya T K <chaitanya.mgit@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/driver-ops.c | 2 | ||||
| -rw-r--r-- | net/mac80211/driver-ops.h | 10 |
2 files changed, 12 insertions, 0 deletions
diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c index 9f97343f13fd..ca1fe5576103 100644 --- a/net/mac80211/driver-ops.c +++ b/net/mac80211/driver-ops.c @@ -236,6 +236,8 @@ int drv_switch_vif_chanctx(struct ieee80211_local *local, int ret = 0; int i; + might_sleep(); + if (!local->ops->switch_vif_chanctx) return -EOPNOTSUPP; diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index f82cfab615f2..154ce4b13406 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -843,6 +843,8 @@ static inline int drv_add_chanctx(struct ieee80211_local *local, { int ret = -EOPNOTSUPP; + might_sleep(); + trace_drv_add_chanctx(local, ctx); if (local->ops->add_chanctx) ret = local->ops->add_chanctx(&local->hw, &ctx->conf); @@ -856,6 +858,8 @@ static inline int drv_add_chanctx(struct ieee80211_local *local, static inline void drv_remove_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { + might_sleep(); + if (WARN_ON(!ctx->driver_present)) return; @@ -870,6 +874,8 @@ static inline void drv_change_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, u32 changed) { + might_sleep(); + trace_drv_change_chanctx(local, ctx, changed); if (local->ops->change_chanctx) { WARN_ON_ONCE(!ctx->driver_present); @@ -903,6 +909,8 @@ static inline void drv_unassign_vif_chanctx(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, struct ieee80211_chanctx *ctx) { + might_sleep(); + if (!check_sdata_in_driver(sdata)) return; @@ -925,6 +933,8 @@ static inline int drv_start_ap(struct ieee80211_local *local, { int ret = 0; + might_sleep(); + if (!check_sdata_in_driver(sdata)) return -EIO; |