linux-kernel - [PATCH 3/3] staging: rtl8712: simplify evm

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Date:   Sat, 18 Jan 2020 20:53:05 +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 3/3] staging: rtl8712: simplify evm_db2percentage()

Use clamp() to simplify function evm_db2percentage() and reduce object
file size.

Signed-off-by: Michael Straube <straube.linux@...il.com>
---
 drivers/staging/rtl8712/rtl8712_recv.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/rtl8712/rtl8712_recv.c b/drivers/staging/rtl8712/rtl8712_recv.c
index 00ea0beb12c9..116773943a2e 100644
--- a/drivers/staging/rtl8712/rtl8712_recv.c
+++ b/drivers/staging/rtl8712/rtl8712_recv.c
@@ -663,17 +663,11 @@ static u8 evm_db2percentage(s8 value)
 	/*
 	 * -33dB~0dB to 0%~99%
 	 */
-	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 = -ret_val;
-	ret_val *= 3;
 	if (ret_val == 99)
 		ret_val = 100;
+
 	return ret_val;
 }
 
-- 
2.24.1