linux-kernel - [PATCH] carl9170: Convert byte_rev

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Message-ID: <35FD53F367049845BC99AC72306C23D103E010D1829D@CNBJMBX05.corpusers.net>
Date:	Fri, 14 Nov 2014 13:16:44 +0800
From:	"Wang, Yalin" <Yalin.Wang@...ymobile.com>
To:	"'chunkeey@...glemail.com'" <chunkeey@...glemail.com>,
	"'linville@...driver.com'" <linville@...driver.com>,
	"'linux-wireless@...r.kernel.org'" <linux-wireless@...r.kernel.org>,
	"'netdev@...r.kernel.org'" <netdev@...r.kernel.org>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'joe@...ches.com'" <joe@...ches.com>
Subject: [PATCH] carl9170: Convert byte_rev_table uses to bitrev8

Use the inline function instead of directly indexing the array.

This allows some architectures with hardware instructions for bit
reversals to eliminate the array.

Signed-off-by: Joe Perches <joe@...ches.com>
Signed-off-by: Yalin Wang <yalin.wang@...ymobile.com>
---
 drivers/net/wireless/ath/carl9170/phy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/carl9170/phy.c b/drivers/net/wireless/ath/carl9170/phy.c
index b80b213..dca6df1 100644
--- a/drivers/net/wireless/ath/carl9170/phy.c
+++ b/drivers/net/wireless/ath/carl9170/phy.c
@@ -994,7 +994,7 @@ static int carl9170_init_rf_bank4_pwr(struct ar9170 *ar, bool band5ghz,
 			refsel0 = 0;
 			refsel1 = 1;
 		}
-		chansel = byte_rev_table[chansel];
+		chansel = bitrev8(chansel);
 	} else {
 		if (freq == 2484) {
 			chansel = 10 + (freq - 2274) / 5;
@@ -1002,7 +1002,7 @@ static int carl9170_init_rf_bank4_pwr(struct ar9170 *ar, bool band5ghz,
 		} else
 			chansel = 16 + (freq - 2272) / 5;
 		chansel *= 4;
-		chansel = byte_rev_table[chansel];
+		chansel = bitrev8(chansel);
 	}
 
 	d1 =	chansel;
-- 
2.1.1

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