ath9k: Fix sparse warnings

drivers/net/wireless/ath/ath9k/init.c:199:21: warning: context imbalance
in 'ath9k_reg_rmw' - different lock contexts for basic block
drivers/net/wireless/ath/ath9k/xmit.c:1175:31: warning: context
imbalance in 'ath_drain_txq_list' - unexpected unlock
drivers/net/wireless/ath/ath9k/xmit.c:2047:23: warning: context
imbalance in 'ath_tx_process_buffer' - unexpected unlock
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c:3041:24: warning: cast to
restricted __le32

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 22 insertions, 9 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 33a1600de34..d109c25417f 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3039,7 +3039,7 @@ static u32 ath9k_hw_ar9300_get_eeprom(struct ath_hw *ah,
         case EEP_CHAIN_MASK_REDUCE:
                 return (pBase->miscConfiguration >> 0x3) & 0x1;
         case EEP_ANT_DIV_CTL1:
-                return le32_to_cpu(eep->base_ext1.ant_div_control);
+                return eep->base_ext1.ant_div_control;
         default:
                 return 0;
         }
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index ce297173e0d..dceaa4a8281 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -196,6 +196,19 @@ static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset)
         return val;
 }
 
+static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset,
+                                    u32 set, u32 clr)
+{
+        u32 val;
+
+        val = ioread32(sc->mem + reg_offset);
+        val &= ~clr;
+        val |= set;
+        iowrite32(val, sc->mem + reg_offset);
+
+        return val;
+}
+
 static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
 {
         struct ath_hw *ah = (struct ath_hw *) hw_priv;
@@ -204,16 +217,12 @@ static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 cl
         unsigned long uninitialized_var(flags);
         u32 val;
 
-        if (ah->config.serialize_regmode == SER_REG_MODE_ON)
+        if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
                 spin_lock_irqsave(&sc->sc_serial_rw, flags);
-
-        val = ioread32(sc->mem + reg_offset);
-        val &= ~clr;
-        val |= set;
-        iowrite32(val, sc->mem + reg_offset);
-
-        if (ah->config.serialize_regmode == SER_REG_MODE_ON)
+                val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
                 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
+        } else
+                val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
 
         return val;
 }
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 9283440a021..7810b926fb3 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1147,6 +1147,8 @@ static bool bf_is_ampdu_not_probing(struct ath_buf *bf)
 
 static void ath_drain_txq_list(struct ath_softc *sc, struct ath_txq *txq,
                                struct list_head *list, bool retry_tx)
+        __releases(txq->axq_lock)
+        __acquires(txq->axq_lock)
 {
         struct ath_buf *bf, *lastbf;
         struct list_head bf_head;
@@ -2035,6 +2037,8 @@ static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
 static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
                                   struct ath_tx_status *ts, struct ath_buf *bf,
                                   struct list_head *bf_head)
+        __releases(txq->axq_lock)
+        __acquires(txq->axq_lock)
 {
         int txok;