wifi: mac80211: Fix sparse warning for monitor_sdata

Use rcu_access_pointer() to avoid sparse warning in
drv_remove_interface().

Signed-off-by: Alexander Wetzel <Alexander@wetzel-home.de>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202502130534.bVrZZBK0-lkp@intel.com/
Fixes: 646262c71aca ("wifi: mac80211: remove debugfs dir for virtual monitor")
Link: https://patch.msgid.link/20250213214330.6113-1-Alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
index 2fc60e1e77a5591bc1a0e6c136949c2709c976c9..35349a7f16cb47f4c703d21db737f747dd3651d5 100644 (file)
--- a/net/mac80211/driver-ops.c
+++ b/net/mac80211/driver-ops.c
@@ -121,7 +121,7 @@ void drv_remove_interface(struct ieee80211_local *local,
         * The virtual monitor interface doesn't get a debugfs
         * entry, so it's exempt here.
         */
-       if (sdata != local->monitor_sdata)
+       if (sdata != rcu_access_pointer(local->monitor_sdata))
                ieee80211_debugfs_recreate_netdev(sdata,
                                                  sdata->vif.valid_links);