From: Colin Ian King Date: Thu, 15 Feb 2024 23:21:51 +0000 (+0000) Subject: wifi: mac80211: clean up assignments to pointer cache. X-Git-Tag: v6.9-rc1~159^2~201^2~25 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba4b1fa3128b2fbf14e167230315cbd9074b629b;p=thirdparty%2Fkernel%2Flinux.git wifi: mac80211: clean up assignments to pointer cache. The assignment to pointer cache in function mesh_fast_tx_gc can be made at the declaration time rather than a later assignment. There are also 3 functions where pointer cache is being initialized at declaration time and later re-assigned again with the same value, these are redundant and can be removed. Cleans up code and three clang scan build warnings: warning: Value stored to 'cache' during its initialization is never read [deadcode.DeadStores] Signed-off-by: Colin Ian King Reviewed-by: Simon Horman Link: https://msgid.link/20240215232151.2075483-1-colin.i.king@gmail.com Signed-off-by: Johannes Berg --- diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index 735edde1bd819..91b55d6a68b97 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -600,11 +600,10 @@ unlock_sta: void mesh_fast_tx_gc(struct ieee80211_sub_if_data *sdata) { unsigned long timeout = msecs_to_jiffies(MESH_FAST_TX_CACHE_TIMEOUT); - struct mesh_tx_cache *cache; + struct mesh_tx_cache *cache = &sdata->u.mesh.tx_cache; struct ieee80211_mesh_fast_tx *entry; struct hlist_node *n; - cache = &sdata->u.mesh.tx_cache; if (atomic_read(&cache->rht.nelems) < MESH_FAST_TX_CACHE_THRESHOLD_SIZE) return; @@ -622,7 +621,6 @@ void mesh_fast_tx_flush_mpath(struct mesh_path *mpath) struct ieee80211_mesh_fast_tx *entry; struct hlist_node *n; - cache = &sdata->u.mesh.tx_cache; spin_lock_bh(&cache->walk_lock); hlist_for_each_entry_safe(entry, n, &cache->walk_head, walk_list) if (entry->mpath == mpath) @@ -637,7 +635,6 @@ void mesh_fast_tx_flush_sta(struct ieee80211_sub_if_data *sdata, struct ieee80211_mesh_fast_tx *entry; struct hlist_node *n; - cache = &sdata->u.mesh.tx_cache; spin_lock_bh(&cache->walk_lock); hlist_for_each_entry_safe(entry, n, &cache->walk_head, walk_list) if (rcu_access_pointer(entry->mpath->next_hop) == sta) @@ -651,7 +648,6 @@ void mesh_fast_tx_flush_addr(struct ieee80211_sub_if_data *sdata, struct mesh_tx_cache *cache = &sdata->u.mesh.tx_cache; struct ieee80211_mesh_fast_tx *entry; - cache = &sdata->u.mesh.tx_cache; spin_lock_bh(&cache->walk_lock); entry = rhashtable_lookup_fast(&cache->rht, addr, fast_tx_rht_params); if (entry)