staging: rtl8188eu: simplify odm_evm_db_to_percentage()

Use clamp() to simplify code in odm_evm_db_to_percentage().

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8188eu/hal/odm_hwconfig.c b/drivers/staging/rtl8188eu/hal/odm_hwconfig.c
index 82d6b2e18b2975e67b7c327ba05c4e63c31d9799..0c034b19d3dd5ae4ae268d255b905f7ff234cfec 100644 (file)
--- a/drivers/staging/rtl8188eu/hal/odm_hwconfig.c
+++ b/drivers/staging/rtl8188eu/hal/odm_hwconfig.c
@@ -53,20 +53,11 @@ static s32 odm_signal_scale_mapping(struct odm_dm_struct *dm_odm, s32 currsig)
 static u8 odm_evm_db_to_percentage(s8 value)
 {
        /*  -33dB~0dB to 0%~99% */
-       s8 ret_val;
-
-       ret_val = value;
-
-       if (ret_val >= 0)
-               ret_val = 0;
-       if (ret_val <= -33)
-               ret_val = -33;
-
-       ret_val = 0 - ret_val;
-       ret_val *= 3;
+       s8 ret_val = clamp(-value, 0, 33) * 3;
 
        if (ret_val == 99)
                ret_val = 100;
+
        return ret_val;
 }