linux-kernel - [PATCH v2 net-next 5/5] net: fec: remove duplicate macros of the BD status

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Message-Id: <20251117101921.1862427-6-wei.fang@nxp.com>
Date: Mon, 17 Nov 2025 18:19:21 +0800
From: Wei Fang <wei.fang@....com>
To: shenwei.wang@....com,
	xiaoning.wang@....com,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	eric@...int.com,
	Frank.Li@....com
Cc: imx@...ts.linux.dev,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 net-next 5/5] net: fec: remove duplicate macros of the BD status

There are two sets of macros used to define the status bits of TX and RX
BDs, one is the BD_SC_xx macros, the other one is the BD_ENET_xx macros.
For the BD_SC_xx macros, only BD_SC_WRAP is used in the driver. But the
BD_ENET_xx macros are more widely used in the driver, and they define
more bits of the BD status. Therefore, remove the BD_SC_xx macros from
now on.

Signed-off-by: Wei Fang <wei.fang@....com>
Reviewed-by: Frank Li <Frank.Li@....com>
---
 drivers/net/ethernet/freescale/fec.h      | 17 -----------------
 drivers/net/ethernet/freescale/fec_main.c |  8 ++++----
 2 files changed, 4 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index a25dca9c7d71..7b4d1fc8e7eb 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -240,23 +240,6 @@ struct bufdesc_ex {
 	__fec16 res0[4];
 };
 
-/*
- *	The following definitions courtesy of commproc.h, which where
- *	Copyright (c) 1997 Dan Malek (dmalek@....net).
- */
-#define BD_SC_EMPTY	((ushort)0x8000)	/* Receive is empty */
-#define BD_SC_READY	((ushort)0x8000)	/* Transmit is ready */
-#define BD_SC_WRAP	((ushort)0x2000)	/* Last buffer descriptor */
-#define BD_SC_INTRPT	((ushort)0x1000)	/* Interrupt on change */
-#define BD_SC_CM	((ushort)0x0200)	/* Continuous mode */
-#define BD_SC_ID	((ushort)0x0100)	/* Rec'd too many idles */
-#define BD_SC_P		((ushort)0x0100)	/* xmt preamble */
-#define BD_SC_BR	((ushort)0x0020)	/* Break received */
-#define BD_SC_FR	((ushort)0x0010)	/* Framing error */
-#define BD_SC_PR	((ushort)0x0008)	/* Parity error */
-#define BD_SC_OV	((ushort)0x0002)	/* Overrun */
-#define BD_SC_CD	((ushort)0x0001)	/* ?? */
-
 /* Buffer descriptor control/status used by Ethernet receive.
  */
 #define BD_ENET_RX_EMPTY	((ushort)0x8000)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 785bae8e1699..0bc93fa15ebd 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1010,7 +1010,7 @@ static void fec_enet_bd_init(struct net_device *dev)
 
 		/* Set the last buffer to wrap */
 		bdp = fec_enet_get_prevdesc(bdp, &rxq->bd);
-		bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP);
+		bdp->cbd_sc |= cpu_to_fec16(BD_ENET_RX_WRAP);
 
 		rxq->bd.cur = rxq->bd.base;
 	}
@@ -1060,7 +1060,7 @@ static void fec_enet_bd_init(struct net_device *dev)
 
 		/* Set the last buffer to wrap */
 		bdp = fec_enet_get_prevdesc(bdp, &txq->bd);
-		bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP);
+		bdp->cbd_sc |= cpu_to_fec16(BD_ENET_TX_WRAP);
 		txq->dirty_tx = bdp;
 	}
 }
@@ -3469,7 +3469,7 @@ fec_enet_alloc_rxq_buffers(struct net_device *ndev, unsigned int queue)
 
 	/* Set the last buffer to wrap. */
 	bdp = fec_enet_get_prevdesc(bdp, &rxq->bd);
-	bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP);
+	bdp->cbd_sc |= cpu_to_fec16(BD_ENET_RX_WRAP);
 	return 0;
 
  err_alloc:
@@ -3505,7 +3505,7 @@ fec_enet_alloc_txq_buffers(struct net_device *ndev, unsigned int queue)
 
 	/* Set the last buffer to wrap. */
 	bdp = fec_enet_get_prevdesc(bdp, &txq->bd);
-	bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP);
+	bdp->cbd_sc |= cpu_to_fec16(BD_ENET_TX_WRAP);
 
 	return 0;
 
-- 
2.34.1