refactored radio hardware info

luasrc/model/cbi/easymesh.lua

@@ -31,39 +31,24 @@ function detect_Node()
 end
 
 
-function get_verbose_hw_info(iface)
+local function get_verbose_hw_info(iface)
     local type = iwinfo.type(iface)
-    if not type then
-        return "Generic"
-    end
+    if not type then return "Generic" end
 
     local driver = iwinfo[type]
-    if not driver then
-        return "Driver not supported"
-    end
+    if not driver then return "Driver not supported" end
 
-    local hw_name = driver.hardware_name and driver.hardware_name(iface)
-    if not hw_name or hw_name == "" then
-        hw_name = "Unknown hardware"
-    end
-    
-    local hw_modes = driver.hwmodelist and driver.hwmodelist(iface)
+    local hw_name = driver.hardware_name and driver.hardware_name(iface) or "Unknown hardware"
+    local hw_modes = driver.hwmodelist and driver.hwmodelist(iface) or {}
     local supported_modes = {}
-    if hw_modes then
-        for mode, supported in pairs(hw_modes) do
-            if supported then
-                table.insert(supported_modes, mode)
-            end
+    
+    for mode, supported in pairs(hw_modes) do
+        if supported then
+            supported_modes[#supported_modes + 1] = mode
         end
     end
 
-    if #supported_modes == 0 then
-        supported_modes_str = "No mode information"
-    else
-        supported_modes_str = table.concat(supported_modes, "/")
-    end
-    local verbose_info = hw_name .. " (" .. supported_modes_str .. ")"
-    return verbose_info
+    return hw_name .. " (" .. (#supported_modes > 0 and table.concat(supported_modes, "/") or "No mode information") .. ")"
 end
 
 local Nodes = luci.sys.exec("batctl n 2>/dev/null| tail +3 | wc -l")