[PATCH] net: ethernet: mtk_eth_soc: use be32 type to store be32 values

From: Simon Horman <horms@kernel.org>
To: Jakub Kicinski <kuba@kernel.org>,
	 "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	 Paolo Abeni <pabeni@redhat.com>
Cc: Felix Fietkau <nbd@nbd.name>, John Crispin <john@phrozen.org>,
	 Sean Wang <sean.wang@mediatek.com>,
	Mark Lee <Mark-MC.Lee@mediatek.com>,
	 Lorenzo Bianconi <lorenzo@kernel.org>,
	 Matthias Brugger <matthias.bgg@gmail.com>,
	 AngeloGioacchino Del Regno
	<angelogioacchino.delregno@collabora.com>,
	 netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	 linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org
Subject: [PATCH] net: ethernet: mtk_eth_soc: use be32 type to store be32 values
Date: Sat, 01 Apr 2023 08:43:44 +0200	[thread overview]
Message-ID: <20230401-mtk_eth_soc-sparse-v1-1-84e9fc7b8eab@kernel.org> (raw)

Perhaps there is a nicer way to handle this but the code
calls for converting an array of host byte order 32bit values
to big endian 32bit values: an ipv6 address to be pretty printed.

Use a sparse-friendly array of be32 to store these values.

Also make use of the cpu_to_be32_array helper rather
than open coding the conversion.

Flagged by sparse:
  drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c:59:27: warning: incorrect type in assignment (different base types)
  drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c:59:27:    expected unsigned int
  drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c:59:27:    got restricted __be32 [usertype]
  drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c:161:46: warning: cast to restricted __be16

No functional changes intended.
Compile tested only.

Signed-off-by: Simon Horman <horms@kernel.org>
---
 drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c b/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c
index 53cf87e9acbb..1e0bb8cee7c4 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c
@@ -47,16 +47,14 @@ static const char *mtk_foe_pkt_type_str(int type)
 static void
 mtk_print_addr(struct seq_file *m, u32 *addr, bool ipv6)
 {
-	u32 n_addr[4];
-	int i;
+	__be32 n_addr[4];
 
 	if (!ipv6) {
 		seq_printf(m, "%pI4h", addr);
 		return;
 	}
 
-	for (i = 0; i < ARRAY_SIZE(n_addr); i++)
-		n_addr[i] = htonl(addr[i]);
+	cpu_to_be32_array(n_addr, addr, 4);
 	seq_printf(m, "%pI6", n_addr);
 }
 


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