netdev - [PATCH] ath9k: dfs: use swap macro in ath9k_check

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Date:   Fri, 3 Nov 2017 15:14:25 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     QCA ath9k Development <ath9k-devel@....qualcomm.com>,
        Kalle Valo <kvalo@...eaurora.org>
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] ath9k: dfs: use swap macro in ath9k_check_chirping

Make use of the swap macro and remove unnecessary variable temp.
This makes the code easier to read and maintain.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 drivers/net/wireless/ath/ath9k/dfs.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/dfs.c b/drivers/net/wireless/ath/ath9k/dfs.c
index 40a397f..6fee9a4 100644
--- a/drivers/net/wireless/ath/ath9k/dfs.c
+++ b/drivers/net/wireless/ath/ath9k/dfs.c
@@ -123,11 +123,9 @@ static bool ath9k_check_chirping(struct ath_softc *sc, u8 *data,
 			fft = (struct ath9k_dfs_fft_40 *) (data + 2);
 			ath_dbg(common, DFS, "fixing datalen by 2\n");
 		}
-		if (IS_CHAN_HT40MINUS(ah->curchan)) {
-			int temp = is_ctl;
-			is_ctl = is_ext;
-			is_ext = temp;
-		}
+		if (IS_CHAN_HT40MINUS(ah->curchan))
+			swap(is_ctl, is_ext);
+
 		for (i = 0; i < FFT_NUM_SAMPLES; i++)
 			max_bin[i] = ath9k_get_max_index_ht40(fft + i, is_ctl,
 							      is_ext);
-- 
2.7.4