[LEDE-DEV] [PATCH luci] luci-mod-admin-full: allow unset txpower value

[Rafał Miłecki]

From: Rafał Miłecki <rafal at milecki.pl>

Sometimes txpower is not set so we should have an option with empty
value to let it stay unset.

Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
---
 .../luci-mod-admin-full/luasrc/model/cbi/admin_network/wifi.lua    | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/modules/luci-mod-admin-full/luasrc/model/cbi/admin_network/wifi.lua b/modules/luci-mod-admin-full/luasrc/model/cbi/admin_network/wifi.lua
index 2dff4dd..91d0929 100644
--- a/modules/luci-mod-admin-full/luasrc/model/cbi/admin_network/wifi.lua
+++ b/modules/luci-mod-admin-full/luasrc/model/cbi/admin_network/wifi.lua
@@ -94,7 +94,7 @@ local function txpower_current(pwr, list)
 			end
 		end
 	end
-	return (list[#list] and list[#list].driver_dbm) or pwr or 0
+	return pwr or ""
 end
 
 local iw = luci.sys.wifi.getiwinfo(arg[1])
@@ -191,7 +191,7 @@ end
 ------------------- MAC80211 Device ------------------
 
 if hwtype == "mac80211" then
-	if #tx_power_list > 1 then
+	if #tx_power_list > 0 then
 		tp = s:taboption("general", ListValue,
 			"txpower", translate("Transmit Power"), "dBm")
 		tp.rmempty = true
@@ -200,6 +200,7 @@ if hwtype == "mac80211" then
 			return txpower_current(Value.cfgvalue(...), tx_power_list)
 		end
 
+		tp:value("", translate("auto"))
 		for _, p in ipairs(tx_power_list) do
 			tp:value(p.driver_dbm, "%i dBm (%i mW)"
 				%{ p.display_dbm, p.display_mw })
@@ -251,6 +252,7 @@ if hwtype == "atheros" then
 		return txpower_current(Value.cfgvalue(...), tx_power_list)
 	end
 
+	tp:value("", translate("auto"))
 	for _, p in ipairs(tx_power_list) do
 		tp:value(p.driver_dbm, "%i dBm (%i mW)"
 			%{ p.display_dbm, p.display_mw })
@@ -308,6 +310,7 @@ if hwtype == "broadcom" then
 		return txpower_current(Value.cfgvalue(...), tx_power_list)
 	end
 
+	tp:value("", translate("auto"))
 	for _, p in ipairs(tx_power_list) do
 		tp:value(p.driver_dbm, "%i dBm (%i mW)"
 			%{ p.display_dbm, p.display_mw })
-- 
2.10.1