From: Colin Ian King <colin.i.king@xxxxxxxxx>
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 <colin.i.king@xxxxxxxxx>
---
net/mac80211/mesh_pathtbl.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 735edde1bd81..91b55d6a68b9 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -599,13 +599,12 @@ void mesh_fast_tx_cache(struct ieee80211_sub_if_data *sdata,
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;
spin_lock_bh(&cache->walk_lock);
@@ -621,9 +620,8 @@ void mesh_fast_tx_flush_mpath(struct mesh_path *mpath)
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;
spin_lock_bh(&cache->walk_lock);
hlist_for_each_entry_safe(entry, n, &cache->walk_head, walk_list)
if (entry->mpath == mpath)
mesh_fast_tx_entry_free(cache, entry);
@@ -636,9 +634,8 @@ void mesh_fast_tx_flush_sta(struct ieee80211_sub_if_data *sdata,
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;
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)
mesh_fast_tx_entry_free(cache, entry);
@@ -650,9 +647,8 @@ 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)
mesh_fast_tx_entry_free(cache, entry);
--
2.43.0
