[PATCH] rtlwifi: Fix reusable codes in core.c

rtl_*_delay() functions were reused same codes about addr variable.
So i have converted to rtl_addr_delay() from code about addr variable.

Conditional codes in rtl_addr_delay() were improved in readability and
performance by using switch codes.

Signed-off-by: Byeoungwook Kim <redacted>
---
 drivers/net/wireless/realtek/rtlwifi/core.c | 48 +++++++++++------------------
 1 file changed, 18 insertions(+), 30 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/core.c b/drivers/net/wireless/realtek/rtlwifi/core.c
index 4ae421e..c1193d1 100644
--- a/drivers/net/wireless/realtek/rtlwifi/core.c
+++ b/drivers/net/wireless/realtek/rtlwifi/core.c

@@ -37,36 +37,34 @@

 void rtl_addr_delay(u32 addr)
 {
-       if (addr == 0xfe)
+       switch (addr) {
+       case 0xfe:
                mdelay(50);
-       else if (addr == 0xfd)
+               break;
+       case 0xfd:
                mdelay(5);
-       else if (addr == 0xfc)
+               break;
+       case 0xfc:
                mdelay(1);
-       else if (addr == 0xfb)
+               break;
+       case 0xfb:
                udelay(50);
-       else if (addr == 0xfa)
+               break;
+       case 0xfa:
                udelay(5);
-       else if (addr == 0xf9)
+               break;
+       case 0xf9:
                udelay(1);
+               break;
+       };

 }
 EXPORT_SYMBOL(rtl_addr_delay);

 void rtl_rfreg_delay(struct ieee80211_hw *hw, enum radio_path rfpath, u32 addr,
                     u32 mask, u32 data)
 {
-       if (addr == 0xfe) {
-               mdelay(50);
-       } else if (addr == 0xfd) {
-               mdelay(5);
-       } else if (addr == 0xfc) {
-               mdelay(1);
-       } else if (addr == 0xfb) {
-               udelay(50);
-       } else if (addr == 0xfa) {
-               udelay(5);
-       } else if (addr == 0xf9) {
-               udelay(1);
+       if (addr >= 0xf9 && addr <= 0xfe) {
+               rtl_addr_delay(addr);
        } else {
                rtl_set_rfreg(hw, rfpath, addr, mask, data);
                udelay(1);

@@ -76,18 +74,8 @@ EXPORT_SYMBOL(rtl_rfreg_delay);

 void rtl_bb_delay(struct ieee80211_hw *hw, u32 addr, u32 data)
 {
-       if (addr == 0xfe) {
-               mdelay(50);
-       } else if (addr == 0xfd) {
-               mdelay(5);
-       } else if (addr == 0xfc) {
-               mdelay(1);
-       } else if (addr == 0xfb) {
-               udelay(50);
-       } else if (addr == 0xfa) {
-               udelay(5);
-       } else if (addr == 0xf9) {
-               udelay(1);
+       if (addr >= 0xf9 && addr <= 0xfe) {
+               rtl_addr_delay(addr);
        } else {
                rtl_set_bbreg(hw, addr, MASKDWORD, data);
                udelay(1);