rt2x00: Add link tuner safe RX toggle states

This adds 2 new states which both are used to toggle
the RX. These new states are required for usage
inside the link tuner thread, because the normal
RX toggling will stop the link tuner thread.
While it is possible that the link tuner thread itself
is the caller of the RX toggle (when using software
antenna diversity).

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

7 files changed, 29 insertions, 7 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
index d6cba138c7ab..c69f85ed7669 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/rt2x00/rt2400pci.c
@@ -960,8 +960,12 @@ static int rt2400pci_set_device_state(struct rt2x00_dev *rt2x00dev,
                 rt2400pci_disable_radio(rt2x00dev);
                 break;
         case STATE_RADIO_RX_ON:
+        case STATE_RADIO_RX_ON_LINK:
+                rt2400pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+                break;
         case STATE_RADIO_RX_OFF:
-                rt2400pci_toggle_rx(rt2x00dev, state);
+        case STATE_RADIO_RX_OFF_LINK:
+                rt2400pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
                 break;
         case STATE_DEEP_SLEEP:
         case STATE_SLEEP:
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index e874fdcae204..91e87b53374f 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -1112,8 +1112,12 @@ static int rt2500pci_set_device_state(struct rt2x00_dev *rt2x00dev,
                 rt2500pci_disable_radio(rt2x00dev);
                 break;
         case STATE_RADIO_RX_ON:
+        case STATE_RADIO_RX_ON_LINK:
+                rt2500pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+                break;
         case STATE_RADIO_RX_OFF:
-                rt2500pci_toggle_rx(rt2x00dev, state);
+        case STATE_RADIO_RX_OFF_LINK:
+                rt2500pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
                 break;
         case STATE_DEEP_SLEEP:
         case STATE_SLEEP:
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 4ca9730e5e92..638c3d243108 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -1001,8 +1001,12 @@ static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
                 rt2500usb_disable_radio(rt2x00dev);
                 break;
         case STATE_RADIO_RX_ON:
+        case STATE_RADIO_RX_ON_LINK:
+                rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+                break;
         case STATE_RADIO_RX_OFF:
-                rt2500usb_toggle_rx(rt2x00dev, state);
+        case STATE_RADIO_RX_OFF_LINK:
+                rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
                 break;
         case STATE_DEEP_SLEEP:
         case STATE_SLEEP:
diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
index 72cfe00c1ed7..0d57d7f67837 100644
--- a/drivers/net/wireless/rt2x00/rt2x00config.c
+++ b/drivers/net/wireless/rt2x00/rt2x00config.c
@@ -102,7 +102,7 @@ void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
          * else the changes will be ignored by the device.
          */
         if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
-                rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
+                rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK);
 
         /*
          * Write new antenna setup to device and reset the link tuner.
@@ -116,7 +116,7 @@ void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
         rt2x00dev->link.ant.active.tx = libconf.ant.tx;
 
         if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
-                rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+                rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);
 }
 
 void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
diff --git a/drivers/net/wireless/rt2x00/rt2x00reg.h b/drivers/net/wireless/rt2x00/rt2x00reg.h
index 838421216da0..b1915dc7dda1 100644
--- a/drivers/net/wireless/rt2x00/rt2x00reg.h
+++ b/drivers/net/wireless/rt2x00/rt2x00reg.h
@@ -85,6 +85,8 @@ enum dev_state {
         STATE_RADIO_OFF,
         STATE_RADIO_RX_ON,
         STATE_RADIO_RX_OFF,
+        STATE_RADIO_RX_ON_LINK,
+        STATE_RADIO_RX_OFF_LINK,
         STATE_RADIO_IRQ_ON,
         STATE_RADIO_IRQ_OFF,
 };
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index b31f0c26c32b..e808db98f2f5 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -1482,8 +1482,12 @@ static int rt61pci_set_device_state(struct rt2x00_dev *rt2x00dev,
                 rt61pci_disable_radio(rt2x00dev);
                 break;
         case STATE_RADIO_RX_ON:
+        case STATE_RADIO_RX_ON_LINK:
+                rt61pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+                break;
         case STATE_RADIO_RX_OFF:
-                rt61pci_toggle_rx(rt2x00dev, state);
+        case STATE_RADIO_RX_OFF_LINK:
+                rt61pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
                 break;
         case STATE_DEEP_SLEEP:
         case STATE_SLEEP:
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index 4d576ab3e7f9..4fac2d414d84 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -1208,8 +1208,12 @@ static int rt73usb_set_device_state(struct rt2x00_dev *rt2x00dev,
                 rt73usb_disable_radio(rt2x00dev);
                 break;
         case STATE_RADIO_RX_ON:
+        case STATE_RADIO_RX_ON_LINK:
+                rt73usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+                break;
         case STATE_RADIO_RX_OFF:
-                rt73usb_toggle_rx(rt2x00dev, state);
+        case STATE_RADIO_RX_OFF_LINK:
+                rt73usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
                 break;
         case STATE_DEEP_SLEEP:
         case STATE_SLEEP: