add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/drivers/net/arcnet/arcnet.c
..
..
@@ -387,10 +387,44 @@
387
387
 	struct arcnet_local *lp = from_timer(lp, t, timer);
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 	struct net_device *dev = lp->dev;
389
389
 
390
-	if (!netif_carrier_ok(dev)) {
390
+	spin_lock_irq(&lp->lock);
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+
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+	if (!lp->reset_in_progress && !netif_carrier_ok(dev)) {
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 		netif_carrier_on(dev);
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 		netdev_info(dev, "link up\n");
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 	}
396
+
397
+	spin_unlock_irq(&lp->lock);
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+}
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+
400
+static void reset_device_work(struct work_struct *work)
401
+{
402
+	struct arcnet_local *lp;
403
+	struct net_device *dev;
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+
405
+	lp = container_of(work, struct arcnet_local, reset_work);
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+	dev = lp->dev;
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+
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+	/* Do not bring the network interface back up if an ifdown
409
+	 * was already done.
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+	 */
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+	if (!netif_running(dev) || !lp->reset_in_progress)
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+		return;
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+
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+	rtnl_lock();
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+
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+	/* Do another check, in case of an ifdown that was triggered in
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+	 * the small race window between the exit condition above and
418
+	 * acquiring RTNL.
419
+	 */
420
+	if (!netif_running(dev) || !lp->reset_in_progress)
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+		goto out;
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+
423
+	dev_close(dev);
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+	dev_open(dev, NULL);
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+
426
+out:
427
+	rtnl_unlock();
394
428
 }
395
429
 
396
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 static void arcnet_reply_tasklet(unsigned long data)
..
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@@ -434,7 +468,7 @@
434
468
 
435
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 	ret = sock_queue_err_skb(sk, ackskb);
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 	if (ret)
437
-		kfree_skb(ackskb);
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+		dev_kfree_skb_irq(ackskb);
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472
 
439
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 	local_irq_enable();
440
474
 };
..
..
@@ -452,11 +486,24 @@
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 		lp->dev = dev;
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 		spin_lock_init(&lp->lock);
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 		timer_setup(&lp->timer, arcnet_timer, 0);
489
+		INIT_WORK(&lp->reset_work, reset_device_work);
455
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 	}
456
491
 
457
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 	return dev;
458
493
 }
459
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 EXPORT_SYMBOL(alloc_arcdev);
495
+
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+void free_arcdev(struct net_device *dev)
497
+{
498
+	struct arcnet_local *lp = netdev_priv(dev);
499
+
500
+	/* Do not cancel this at ->ndo_close(), as the workqueue itself
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+	 * indirectly calls the ifdown path through dev_close().
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+	 */
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+	cancel_work_sync(&lp->reset_work);
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+	free_netdev(dev);
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+}
506
+EXPORT_SYMBOL(free_arcdev);
460
507
 
461
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 /* Open/initialize the board.  This is called sometime after booting when
462
509
  * the 'ifconfig' program is run.
..
..
@@ -587,6 +634,10 @@
587
634
 
588
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 	/* shut down the card */
589
636
 	lp->hw.close(dev);
637
+
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+	/* reset counters */
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+	lp->reset_in_progress = 0;
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+
590
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 	module_put(lp->hw.owner);
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 	return 0;
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643
 }
..
..
@@ -763,7 +814,7 @@
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814
 }
764
815
 
765
816
 /* Called by the kernel when transmit times out */
766
-void arcnet_timeout(struct net_device *dev)
817
+void arcnet_timeout(struct net_device *dev, unsigned int txqueue)
767
818
 {
768
819
 	unsigned long flags;
769
820
 	struct arcnet_local *lp = netdev_priv(dev);
..
..
@@ -820,6 +871,9 @@
820
871
 
821
872
 	spin_lock_irqsave(&lp->lock, flags);
822
873
 
874
+	if (lp->reset_in_progress)
875
+		goto out;
876
+
823
877
 	/* RESET flag was enabled - if device is not running, we must
824
878
 	 * clear it right away (but nothing else).
825
879
 	 */
..
..
@@ -852,11 +906,14 @@
852
906
 		if (status & RESETflag) {
853
907
 			arc_printk(D_NORMAL, dev, "spurious reset (status=%Xh)\n",
854
908
 				   status);
855
-			arcnet_close(dev);
856
-			arcnet_open(dev);
909
+
910
+			lp->reset_in_progress = 1;
911
+			netif_stop_queue(dev);
912
+			netif_carrier_off(dev);
913
+			schedule_work(&lp->reset_work);
857
914
 
858
915
 			/* get out of the interrupt handler! */
859
-			break;
916
+			goto out;
860
917
 		}
861
918
 		/* RX is inhibited - we must have received something.
862
919
 		 * Prepare to receive into the next buffer.
..
..
@@ -1052,6 +1109,7 @@
1052
1109
 	udelay(1);
1053
1110
 	lp->hw.intmask(dev, lp->intmask);
1054
1111
 
1112
+out:
1055
1113
 	spin_unlock_irqrestore(&lp->lock, flags);
1056
1114
 	return retval;
1057
1115
 }