mac80211: make LED trigger names available early

The throughput trigger will require doing LED
classdev/trigger handling before register_hw(),
so drivers should have access to the trigger
names before it. If trigger registration fails,
this will still make the trigger name available,
but that's not a big problem since the default
trigger will the simply not be found.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 22 insertions, 20 deletions

diff --git a/net/mac80211/led.c b/net/mac80211/led.c
index 063aad944246..740a1d4e0a9c 100644
--- a/net/mac80211/led.c
+++ b/net/mac80211/led.c
@@ -54,12 +54,22 @@ void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
                 led_trigger_event(local->radio_led, LED_OFF);
 }
 
+void ieee80211_led_names(struct ieee80211_local *local)
+{
+        snprintf(local->rx_led_name, sizeof(local->rx_led_name),
+                 "%srx", wiphy_name(local->hw.wiphy));
+        snprintf(local->tx_led_name, sizeof(local->tx_led_name),
+                 "%stx", wiphy_name(local->hw.wiphy));
+        snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
+                 "%sassoc", wiphy_name(local->hw.wiphy));
+        snprintf(local->radio_led_name, sizeof(local->radio_led_name),
+                 "%sradio", wiphy_name(local->hw.wiphy));
+}
+
 void ieee80211_led_init(struct ieee80211_local *local)
 {
         local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
         if (local->rx_led) {
-                snprintf(local->rx_led_name, sizeof(local->rx_led_name),
-                         "%srx", wiphy_name(local->hw.wiphy));
                 local->rx_led->name = local->rx_led_name;
                 if (led_trigger_register(local->rx_led)) {
                         kfree(local->rx_led);
@@ -69,8 +79,6 @@ void ieee80211_led_init(struct ieee80211_local *local)
 
         local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
         if (local->tx_led) {
-                snprintf(local->tx_led_name, sizeof(local->tx_led_name),
-                         "%stx", wiphy_name(local->hw.wiphy));
                 local->tx_led->name = local->tx_led_name;
                 if (led_trigger_register(local->tx_led)) {
                         kfree(local->tx_led);
@@ -80,8 +88,6 @@ void ieee80211_led_init(struct ieee80211_local *local)
 
         local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
         if (local->assoc_led) {
-                snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
-                         "%sassoc", wiphy_name(local->hw.wiphy));
                 local->assoc_led->name = local->assoc_led_name;
                 if (led_trigger_register(local->assoc_led)) {
                         kfree(local->assoc_led);
@@ -91,8 +97,6 @@ void ieee80211_led_init(struct ieee80211_local *local)
 
         local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
         if (local->radio_led) {
-                snprintf(local->radio_led_name, sizeof(local->radio_led_name),
-                         "%sradio", wiphy_name(local->hw.wiphy));
                 local->radio_led->name = local->radio_led_name;
                 if (led_trigger_register(local->radio_led)) {
                         kfree(local->radio_led);
@@ -125,9 +129,7 @@ char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
 {
         struct ieee80211_local *local = hw_to_local(hw);
 
-        if (local->radio_led)
-                return local->radio_led_name;
-        return NULL;
+        return local->radio_led_name;
 }
 EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
 
@@ -135,9 +137,7 @@ char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
 {
         struct ieee80211_local *local = hw_to_local(hw);
 
-        if (local->assoc_led)
-                return local->assoc_led_name;
-        return NULL;
+        return local->assoc_led_name;
 }
 EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
 
@@ -145,9 +145,7 @@ char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
 {
         struct ieee80211_local *local = hw_to_local(hw);
 
-        if (local->tx_led)
-                return local->tx_led_name;
-        return NULL;
+        return local->tx_led_name;
 }
 EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
 
@@ -155,8 +153,6 @@ char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
 {
         struct ieee80211_local *local = hw_to_local(hw);
 
-        if (local->rx_led)
-                return local->rx_led_name;
-        return NULL;
+        return local->rx_led_name;
 }
 EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
diff --git a/net/mac80211/led.h b/net/mac80211/led.h
index 77b1e1ba6039..8320cbac61c6 100644
--- a/net/mac80211/led.h
+++ b/net/mac80211/led.h
@@ -18,6 +18,7 @@ extern void ieee80211_led_assoc(struct ieee80211_local *local,
                                 bool associated);
 extern void ieee80211_led_radio(struct ieee80211_local *local,
                                 bool enabled);
+extern void ieee80211_led_names(struct ieee80211_local *local);
 extern void ieee80211_led_init(struct ieee80211_local *local);
 extern void ieee80211_led_exit(struct ieee80211_local *local);
 #else
@@ -35,6 +36,9 @@ static inline void ieee80211_led_radio(struct ieee80211_local *local,
                                        bool enabled)
 {
 }
+static inline void ieee80211_led_names(struct ieee80211_local *local)
+{
+}
 static inline void ieee80211_led_init(struct ieee80211_local *local)
 {
 }
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index a21d049caf19..bbe8e0ac6e52 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -605,6 +605,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
         /* init dummy netdev for use w/ NAPI */
         init_dummy_netdev(&local->napi_dev);
 
+        ieee80211_led_names(local);
+
         return local_to_hw(local);
 }
 EXPORT_SYMBOL(ieee80211_alloc_hw);