rt2x00: restore original beaconing state

After changing local per interface beacon setting restore original
global beaconing state.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 17 insertions, 18 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 41d4a8167dc3..c17fcf272728 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -1005,10 +1005,9 @@ void rt2800_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc)
                                    entry->skb->len + padding_len);
 
         /*
-         * Enable beaconing again.
+         * Restore beaconing state.
          */
-        rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 1);
-        rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
+        rt2800_register_write(rt2x00dev, BCN_TIME_CFG, orig_reg);
 
         /*
          * Clean up beacon skb.
@@ -1039,13 +1038,14 @@ static inline void rt2800_clear_beacon_register(struct rt2x00_dev *rt2x00dev,
 void rt2800_clear_beacon(struct queue_entry *entry)
 {
         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
-        u32 reg;
+        u32 orig_reg, reg;
 
         /*
          * Disable beaconing while we are reloading the beacon data,
          * otherwise we might be sending out invalid data.
          */
-        rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
+        rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &orig_reg);
+        reg = orig_reg;
         rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 0);
         rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
 
@@ -1055,10 +1055,9 @@ void rt2800_clear_beacon(struct queue_entry *entry)
         rt2800_clear_beacon_register(rt2x00dev, entry->entry_idx);
 
         /*
-         * Enabled beaconing again.
+         * Restore beaconing state.
          */
-        rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 1);
-        rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
+        rt2800_register_write(rt2x00dev, BCN_TIME_CFG, orig_reg);
 }
 EXPORT_SYMBOL_GPL(rt2800_clear_beacon);
 
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 24402984ee57..9048a9cbe52c 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -2031,13 +2031,14 @@ static void rt61pci_write_beacon(struct queue_entry *entry,
 static void rt61pci_clear_beacon(struct queue_entry *entry)
 {
         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
-        u32 reg;
+        u32 orig_reg, reg;
 
         /*
          * Disable beaconing while we are reloading the beacon data,
          * otherwise we might be sending out invalid data.
          */
-        rt2x00mmio_register_read(rt2x00dev, TXRX_CSR9, &reg);
+        rt2x00mmio_register_read(rt2x00dev, TXRX_CSR9, &orig_reg);
+        reg = orig_reg;
         rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
         rt2x00mmio_register_write(rt2x00dev, TXRX_CSR9, reg);
 
@@ -2048,10 +2049,9 @@ static void rt61pci_clear_beacon(struct queue_entry *entry)
                                   HW_BEACON_OFFSET(entry->entry_idx), 0);
 
         /*
-         * Enable beaconing again.
+         * Restore global beaconing state.
          */
-        rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 1);
-        rt2x00mmio_register_write(rt2x00dev, TXRX_CSR9, reg);
+        rt2x00mmio_register_write(rt2x00dev, TXRX_CSR9, orig_reg);
 }
 
 /*
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index a140170b1eb3..95724ff9c726 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -1597,13 +1597,14 @@ static void rt73usb_clear_beacon(struct queue_entry *entry)
 {
         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
         unsigned int beacon_base;
-        u32 reg;
+        u32 orig_reg, reg;
 
         /*
          * Disable beaconing while we are reloading the beacon data,
          * otherwise we might be sending out invalid data.
          */
-        rt2x00usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
+        rt2x00usb_register_read(rt2x00dev, TXRX_CSR9, &orig_reg);
+        reg = orig_reg;
         rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
         rt2x00usb_register_write(rt2x00dev, TXRX_CSR9, reg);
 
@@ -1614,10 +1615,9 @@ static void rt73usb_clear_beacon(struct queue_entry *entry)
         rt2x00usb_register_write(rt2x00dev, beacon_base, 0);
 
         /*
-         * Enable beaconing again.
+         * Restore beaconing state.
          */
-        rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 1);
-        rt2x00usb_register_write(rt2x00dev, TXRX_CSR9, reg);
+        rt2x00usb_register_write(rt2x00dev, TXRX_CSR9, orig_reg);
 }
 
 static int rt73usb_get_tx_data_len(struct queue_entry *entry)