linux-kernel - [PATCH net-next] rsi: Slightly simplify rsi_set

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Message-Id: <29bf0296bd939e3f6952272bfdcc73b22edbc374.1679328588.git.christophe.jaillet@wanadoo.fr>
Date:   Mon, 20 Mar 2023 17:13:42 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     amitkarwar@...il.com, siva8118@...il.com, kvalo@...nel.org,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH net-next] rsi: Slightly simplify rsi_set_channel()

There is no point in allocating 'skb' and then freeing it if !channel.

Make the sanity check first to slightly simplify the code.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/wireless/rsi/rsi_91x_mgmt.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_mgmt.c b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
index c14689266fec..be9ac252f804 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mgmt.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
@@ -1127,6 +1127,9 @@ int rsi_set_channel(struct rsi_common *common,
 	rsi_dbg(MGMT_TX_ZONE,
 		"%s: Sending scan req frame\n", __func__);
 
+	if (!channel)
+		return 0;
+
 	skb = dev_alloc_skb(frame_len);
 	if (!skb) {
 		rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
@@ -1134,10 +1137,6 @@ int rsi_set_channel(struct rsi_common *common,
 		return -ENOMEM;
 	}
 
-	if (!channel) {
-		dev_kfree_skb(skb);
-		return 0;
-	}
 	memset(skb->data, 0, frame_len);
 	chan_cfg = (struct rsi_chan_config *)skb->data;
 
-- 
2.32.0