cfg80211: warn if db.txt is empty with CONFIG_CFG80211_INTERNAL_REGDB

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / wireless / reg.c

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index e9a0ac83b84c2798961e59b1045a2e09d52b0a5d..15f347477a9953fb85acc494436cd2763cd266a9 100644 (file)
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -388,7 +388,15 @@ static void reg_regdb_query(const char *alpha2)
 
        schedule_work(&reg_regdb_work);
 }
+
+/* Feel free to add any other sanity checks here */
+static void reg_regdb_size_check(void)
+{
+       /* We should ideally BUILD_BUG_ON() but then random builds would fail */
+       WARN_ONCE(!reg_regdb_size, "db.txt is empty, you should update it...");
+}
 #else
+static inline void reg_regdb_size_check(void) {}
 static inline void reg_regdb_query(const char *alpha2) {}
 #endif /* CONFIG_CFG80211_INTERNAL_REGDB */
 
@@ -2322,6 +2330,8 @@ int __init regulatory_init(void)
        spin_lock_init(&reg_requests_lock);
        spin_lock_init(&reg_pending_beacons_lock);
 
+       reg_regdb_size_check();
+
        cfg80211_regdomain = cfg80211_world_regdom;
 
        user_alpha2[0] = '9';