[PATCH 1/2] can: esd_usb: Apply some small changes before adding esd CAN-USB/3 support

[Frank Jungclaus]

* Add current year to copyright notice
* For reasons of orthogonality rename all occurrences of ESD_RTR to
  ESD_DLC_RTR

Signed-off-by: Frank Jungclaus <frank.jungclaus@xxxxxx>
---
 drivers/net/can/usb/esd_usb.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/can/usb/esd_usb.c b/drivers/net/can/usb/esd_usb.c
index d33bac3a6c10..e24fa48b9b42 100644
--- a/drivers/net/can/usb/esd_usb.c
+++ b/drivers/net/can/usb/esd_usb.c
@@ -3,7 +3,7 @@
  * CAN driver for esd electronics gmbh CAN-USB/2 and CAN-USB/Micro
  *
  * Copyright (C) 2010-2012 esd electronic system design gmbh, Matthias Fuchs <socketcan@xxxxxx>
- * Copyright (C) 2022 esd electronics gmbh, Frank Jungclaus <frank.jungclaus@xxxxxx>
+ * Copyright (C) 2022-2023 esd electronics gmbh, Frank Jungclaus <frank.jungclaus@xxxxxx>
  */
 #include <linux/ethtool.h>
 #include <linux/signal.h>
@@ -42,7 +42,7 @@ MODULE_LICENSE("GPL v2");
 #define CMD_IDADD		6 /* also used for IDADD_REPLY */
 
 /* esd CAN message flags - dlc field */
-#define ESD_RTR			0x10
+#define ESD_DLC_RTR		0x10
 
 /* esd CAN message flags - id field */
 #define ESD_EXTID		0x20000000
@@ -347,13 +347,13 @@ static void esd_usb_rx_can_msg(struct esd_usb_net_priv *priv,
 		}
 
 		cf->can_id = id & ESD_IDMASK;
-		can_frame_set_cc_len(cf, msg->rx.dlc & ~ESD_RTR,
+		can_frame_set_cc_len(cf, msg->rx.dlc & ~ESD_DLC_RTR,
 				     priv->can.ctrlmode);
 
 		if (id & ESD_EXTID)
 			cf->can_id |= CAN_EFF_FLAG;
 
-		if (msg->rx.dlc & ESD_RTR) {
+		if (msg->rx.dlc & ESD_DLC_RTR) {
 			cf->can_id |= CAN_RTR_FLAG;
 		} else {
 			for (i = 0; i < cf->len; i++)
@@ -772,7 +772,7 @@ static netdev_tx_t esd_usb_start_xmit(struct sk_buff *skb,
 	msg->tx.id = cpu_to_le32(cf->can_id & CAN_ERR_MASK);
 
 	if (cf->can_id & CAN_RTR_FLAG)
-		msg->tx.dlc |= ESD_RTR;
+		msg->tx.dlc |= ESD_DLC_RTR;
 
 	if (cf->can_id & CAN_EFF_FLAG)
 		msg->tx.id |= cpu_to_le32(ESD_EXTID);
-- 
2.25.1