spectrum: don't check blacklistFreqs if unset

Fixes part of https://github.com/armel/uv-k5-firmware-custom/issues/151
2024-06-29 13:56:16 -07:00
parent 45987500f2
commit 360134a8d4
1 changed files with 4 additions and 3 deletions
--- a/app/spectrum.c
+++ b/app/spectrum.c
@@ -671,9 +671,10 @@ static void Blacklist() {
 #ifdef ENABLE_SCAN_RANGES
 static bool IsBlacklisted(uint16_t idx)
 {
-  for(uint8_t i = 0; i < ARRAY_SIZE(blacklistFreqs); i++)
-    if(blacklistFreqs[i] == idx)
-      return true;
+  if(blacklistedFreqs[0]) // cheaper than checking blacklistFreqsIdx
+    for(uint8_t i = 0; i < ARRAY_SIZE(blacklistFreqs); i++)
+      if(blacklistFreqs[i] == idx)
+        return true;
  return false;
 }
 #endif