mac80211: fix crash when unloading drivers (#17706)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Backport of r42329

SVN-Revision: 42330

diff --git a/package/kernel/mac80211/patches/008-fix_netdev_unregister.patch b/package/kernel/mac80211/patches/008-fix_netdev_unregister.patch
new file mode 100644 (file)
index 0000000..8340da8
--- /dev/null
+++ b/package/kernel/mac80211/patches/008-fix_netdev_unregister.patch
@@ -0,0 +1,14 @@
+--- a/net/mac80211/iface.c
++++ b/net/mac80211/iface.c
+@@ -1796,7 +1796,11 @@ void ieee80211_remove_interfaces(struct 
+       }
+       mutex_unlock(&local->iflist_mtx);
+       unregister_netdevice_many(&unreg_list);
++#if (!(LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,45) && \
++       LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)) && \
++     (LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0)))
+       list_del(&unreg_list);
++#endif
+ 
+       list_for_each_entry_safe(sdata, tmp, &wdev_list, list) {
+               list_del(&sdata->list);