linux-kernel - [PATCH 2/3] staging: rtl8192u: simplify rtl819x_evm

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Date:   Sat, 18 Jan 2020 20:53:04 +0100
From:   Michael Straube <straube.linux@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, florian.c.schilhabel@...glemail.com,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>
Subject: [PATCH 2/3] staging: rtl8192u: simplify rtl819x_evm_dbtopercentage()

Use clamp() to simplify function rtl819x_evm_dbtopercentage() and
reduce object file size.

Signed-off-by: Michael Straube <straube.linux@...il.com>
---
 drivers/staging/rtl8192u/r8192U_core.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index 00fdcbf64b0b..a40ce0d7a467 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -3954,18 +3954,11 @@ static u8 rtl819x_query_rxpwrpercentage(s8 antpower)
 
 static u8 rtl819x_evm_dbtopercentage(s8 value)
 {
-	s8 ret_val;
+	s8 ret_val = clamp(-value, 0, 33) * 3;
 
-	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;
 	if (ret_val == 99)
 		ret_val = 100;
+
 	return ret_val;
 }
 
-- 
2.24.1