linux-kernel - [PATCH AUTOSEL 4.14 09/23] net: ftmac100: fix endianness-related issues from 'sparse'

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Message-Id: <20221009222557.1219968-9-sashal@kernel.org>
Date:   Sun,  9 Oct 2022 18:25:39 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Sergei Antonov <saproj@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Paolo Abeni <pabeni@...hat.com>,
        Sasha Levin <sashal@...nel.org>, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 4.14 09/23] net: ftmac100: fix endianness-related issues from 'sparse'

From: Sergei Antonov <saproj@...il.com>

[ Upstream commit 9df696b3b3a4c96c3219eb87c7bf03fb50e490b8 ]

Sparse found a number of endianness-related issues of these kinds:

.../ftmac100.c:192:32: warning: restricted __le32 degrades to integer

.../ftmac100.c:208:23: warning: incorrect type in assignment (different base types)
.../ftmac100.c:208:23:    expected unsigned int rxdes0
.../ftmac100.c:208:23:    got restricted __le32 [usertype]

.../ftmac100.c:249:23: warning: invalid assignment: &=
.../ftmac100.c:249:23:    left side has type unsigned int
.../ftmac100.c:249:23:    right side has type restricted __le32

.../ftmac100.c:527:16: warning: cast to restricted __le32

Change type of some fields from 'unsigned int' to '__le32' to fix it.

Signed-off-by: Sergei Antonov <saproj@...il.com>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Link: https://lore.kernel.org/r/20220902113749.1408562-1-saproj@gmail.com
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/faraday/ftmac100.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/faraday/ftmac100.h b/drivers/net/ethernet/faraday/ftmac100.h
index 46a0c47b1ee1..0731d65e856c 100644
--- a/drivers/net/ethernet/faraday/ftmac100.h
+++ b/drivers/net/ethernet/faraday/ftmac100.h
@@ -135,9 +135,9 @@
  * Transmit descriptor, aligned to 16 bytes
  */
 struct ftmac100_txdes {
-	unsigned int	txdes0;
-	unsigned int	txdes1;
-	unsigned int	txdes2;	/* TXBUF_BADR */
+	__le32		txdes0;
+	__le32		txdes1;
+	__le32		txdes2;	/* TXBUF_BADR */
 	unsigned int	txdes3;	/* not used by HW */
 } __attribute__ ((aligned(16)));
 
@@ -156,9 +156,9 @@ struct ftmac100_txdes {
  * Receive descriptor, aligned to 16 bytes
  */
 struct ftmac100_rxdes {
-	unsigned int	rxdes0;
-	unsigned int	rxdes1;
-	unsigned int	rxdes2;	/* RXBUF_BADR */
+	__le32		rxdes0;
+	__le32		rxdes1;
+	__le32		rxdes2;	/* RXBUF_BADR */
 	unsigned int	rxdes3;	/* not used by HW */
 } __attribute__ ((aligned(16)));
 
-- 
2.35.1