add lvds1024*800

hc

2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920

 kernel/drivers/net/can/usb/usb_8dev.c
..
..
@@ -1,19 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * CAN driver for "8 devices" USB2CAN converter
3
4
  *
4
5
  * Copyright (C) 2012 Bernd Krumboeck (krumboeck@universalnet.at)
5
- *
6
- * This program is free software; you can redistribute it and/or modify it
7
- * under the terms of the GNU General Public License as published
8
- * by the Free Software Foundation; version 2 of the License.
9
- *
10
- * This program is distributed in the hope that it will be useful, but
11
- * WITHOUT ANY WARRANTY; without even the implied warranty of
12
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
- * General Public License for more details.
14
- *
15
- * You should have received a copy of the GNU General Public License along
16
- * with this program.
17
6
  *
18
7
  * This driver is inspired by the 3.2.0 version of drivers/net/can/usb/ems_usb.c
19
8
  * and drivers/net/can/usb/esd_usb2.c
..
..
@@ -99,7 +88,7 @@
99
88
 
100
89
 /* status */
101
90
 #define USB_8DEV_STATUSMSG_OK		0x00  /* Normal condition. */
102
-#define USB_8DEV_STATUSMSG_OVERRUN	0x01  /* Overrun occured when sending */
91
+#define USB_8DEV_STATUSMSG_OVERRUN	0x01  /* Overrun occurred when sending */
103
92
 #define USB_8DEV_STATUSMSG_BUSLIGHT	0x02  /* Error counter has reached 96 */
104
93
 #define USB_8DEV_STATUSMSG_BUSHEAVY	0x03  /* Error count. has reached 128 */
105
94
 #define USB_8DEV_STATUSMSG_BUSOFF	0x04  /* Device is in BUSOFF */
..
..
@@ -177,7 +166,7 @@
177
166
 /* command frame */
178
167
 struct __packed usb_8dev_cmd_msg {
179
168
 	u8 begin;
180
-	u8 channel;	/* unkown - always 0 */
169
+	u8 channel;	/* unknown - always 0 */
181
170
 	u8 command;	/* command to execute */
182
171
 	u8 opt1;	/* optional parameter / return value */
183
172
 	u8 opt2;	/* optional parameter 2 */
..
..
@@ -453,9 +442,10 @@
453
442
 
454
443
 	if (rx_errors)
455
444
 		stats->rx_errors++;
456
-
457
-	cf->data[6] = txerr;
458
-	cf->data[7] = rxerr;
445
+	if (priv->can.state != CAN_STATE_BUS_OFF) {
446
+		cf->data[6] = txerr;
447
+		cf->data[7] = rxerr;
448
+	}
459
449
 
460
450
 	priv->bec.txerr = txerr;
461
451
 	priv->bec.rxerr = rxerr;
..
..
@@ -681,9 +671,20 @@
681
671
 	atomic_inc(&priv->active_tx_urbs);
682
672
 
683
673
 	err = usb_submit_urb(urb, GFP_ATOMIC);
684
-	if (unlikely(err))
685
-		goto failed;
686
-	else if (atomic_read(&priv->active_tx_urbs) >= MAX_TX_URBS)
674
+	if (unlikely(err)) {
675
+		can_free_echo_skb(netdev, context->echo_index);
676
+
677
+		usb_unanchor_urb(urb);
678
+		usb_free_coherent(priv->udev, size, buf, urb->transfer_dma);
679
+
680
+		atomic_dec(&priv->active_tx_urbs);
681
+
682
+		if (err == -ENODEV)
683
+			netif_device_detach(netdev);
684
+		else
685
+			netdev_warn(netdev, "failed tx_urb %d\n", err);
686
+		stats->tx_dropped++;
687
+	} else if (atomic_read(&priv->active_tx_urbs) >= MAX_TX_URBS)
687
688
 		/* Slow down tx path */
688
689
 		netif_stop_queue(netdev);
689
690
 
..
..
@@ -701,19 +702,6 @@
701
702
 	netdev_warn(netdev, "couldn't find free context");
702
703
 
703
704
 	return NETDEV_TX_BUSY;
704
-
705
-failed:
706
-	can_free_echo_skb(netdev, context->echo_index);
707
-
708
-	usb_unanchor_urb(urb);
709
-	usb_free_coherent(priv->udev, size, buf, urb->transfer_dma);
710
-
711
-	atomic_dec(&priv->active_tx_urbs);
712
-
713
-	if (err == -ENODEV)
714
-		netif_device_detach(netdev);
715
-	else
716
-		netdev_warn(netdev, "failed tx_urb %d\n", err);
717
705
 
718
706
 nomembuf:
719
707
 	usb_free_urb(urb);