linux-kernel - [PATCH] sfc: Use swap() instead of open coding it

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Date:   Wed,  5 Jan 2022 23:22:37 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     ecree.xilinx@...il.com
Cc:     habetsm.xilinx@...il.com, davem@...emloft.net, kuba@...nel.org,
        ast@...nel.org, daniel@...earbox.net, hawk@...nel.org,
        john.fastabend@...il.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH] sfc: Use swap() instead of open coding it

Clean the following coccicheck warning:

./drivers/net/ethernet/sfc/efx_channels.c:870:36-37: WARNING opportunity
for swap().

./drivers/net/ethernet/sfc/efx_channels.c:824:36-37: WARNING opportunity
for swap().

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 drivers/net/ethernet/sfc/efx_channels.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/sfc/efx_channels.c b/drivers/net/ethernet/sfc/efx_channels.c
index b015d1f2e204..ead550ae2709 100644
--- a/drivers/net/ethernet/sfc/efx_channels.c
+++ b/drivers/net/ethernet/sfc/efx_channels.c
@@ -819,11 +819,8 @@ int efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries)
 	old_txq_entries = efx->txq_entries;
 	efx->rxq_entries = rxq_entries;
 	efx->txq_entries = txq_entries;
-	for (i = 0; i < efx->n_channels; i++) {
-		channel = efx->channel[i];
-		efx->channel[i] = other_channel[i];
-		other_channel[i] = channel;
-	}
+	for (i = 0; i < efx->n_channels; i++)
+		swap(efx->channel[i], other_channel[i]);
 
 	/* Restart buffer table allocation */
 	efx->next_buffer_table = next_buffer_table;
@@ -865,11 +862,8 @@ int efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries)
 	/* Swap back */
 	efx->rxq_entries = old_rxq_entries;
 	efx->txq_entries = old_txq_entries;
-	for (i = 0; i < efx->n_channels; i++) {
-		channel = efx->channel[i];
-		efx->channel[i] = other_channel[i];
-		other_channel[i] = channel;
-	}
+	for (i = 0; i < efx->n_channels; i++)
+		swap(efx->channel[i], other_channel[i]);
 	goto out;
 }
 
-- 
2.20.1.7.g153144c