[PATCH] ath9k: Remove unneeded variable to store return value

[zhong jiang]

ath9k_reg_rmw_single do not need return value to cope with different
cases. And change functon return type to void.

Signed-off-by: zhong jiang <zhongji...@huawei.com>
---
 drivers/net/wireless/ath/ath9k/htc_drv_init.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c 
b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 214c682..d961095 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -463,7 +463,7 @@ static void ath9k_enable_rmw_buffer(void *hw_priv)
        atomic_inc(&priv->wmi->m_rmw_cnt);
 }
 
-static u32 ath9k_reg_rmw_single(void *hw_priv,
+static void ath9k_reg_rmw_single(void *hw_priv,
                                 u32 reg_offset, u32 set, u32 clr)
 {
        struct ath_hw *ah = hw_priv;
@@ -471,7 +471,6 @@ static u32 ath9k_reg_rmw_single(void *hw_priv,
        struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
        struct register_rmw buf, buf_ret;
        int ret;
-       u32 val = 0;
 
        buf.reg = cpu_to_be32(reg_offset);
        buf.set = cpu_to_be32(set);
@@ -485,7 +484,6 @@ static u32 ath9k_reg_rmw_single(void *hw_priv,
                ath_dbg(common, WMI, "REGISTER RMW FAILED:(0x%04x, %d)\n",
                        reg_offset, ret);
        }
-       return val;
 }
 
 static u32 ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
-- 
1.7.12.4