This is a note to let you know that I've just added the patch titled
wifi: mac80211: clean up assignments to pointer cache.
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-mac80211-clean-up-assignments-to-pointer-cache.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit bc5cce456d41e228f8a2fa4f8fcd6381267017b9
Author: Colin Ian King <colin.i.king@xxxxxxxxx>
Date: Thu Feb 15 23:21:51 2024 +0000
wifi: mac80211: clean up assignments to pointer cache.
[ Upstream commit ba4b1fa3128b2fbf14e167230315cbd9074b629b ]
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>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Link: https://msgid.link/20240215232151.2075483-1-colin.i.king@xxxxxxxxx
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Stable-dep-of: 8c75cdcdf869 ("wifi: mac80211: split mesh fast tx cache into local/proxied/forwarded")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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 @@ 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;
@@ -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)
