change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/drivers/usb/misc/appledisplay.c
..
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@@ -69,7 +69,6 @@
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 	struct delayed_work work;
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 	int button_pressed;
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-	spinlock_t lock;
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 	struct mutex sysfslock;		/* concurrent read and write */
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 };
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..
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@@ -79,7 +78,6 @@
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 {
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 	struct appledisplay *pdata = urb->context;
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 	struct device *dev = &pdata->udev->dev;
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-	unsigned long flags;
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 	int status = urb->status;
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 	int retval;
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..
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@@ -91,7 +89,7 @@
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 		dev_err(dev,
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 			"OVERFLOW with data length %d, actual length is %d\n",
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 			ACD_URB_BUFFER_LEN, pdata->urb->actual_length);
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-		/* fall through */
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+		fallthrough;
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 	case -ECONNRESET:
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 	case -ENOENT:
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 	case -ESHUTDOWN:
..
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@@ -105,8 +103,6 @@
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 		goto exit;
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 	}
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-	spin_lock_irqsave(&pdata->lock, flags);
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-
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 	switch(pdata->urbdata[1]) {
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 	case ACD_BTN_BRIGHT_UP:
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 	case ACD_BTN_BRIGHT_DOWN:
..
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@@ -118,8 +114,6 @@
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 		pdata->button_pressed = 0;
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 		break;
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 	}
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-
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-	spin_unlock_irqrestore(&pdata->lock, flags);
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 exit:
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 	retval = usb_submit_urb(pdata->urb, GFP_ATOMIC);
..
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@@ -234,7 +228,6 @@
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 	pdata->udev = udev;
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-	spin_lock_init(&pdata->lock);
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 	INIT_DELAYED_WORK(&pdata->work, appledisplay_work);
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 	mutex_init(&pdata->sysfslock);
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..
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@@ -266,6 +259,7 @@
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 		usb_rcvintpipe(udev, int_in_endpointAddr),
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 		pdata->urbdata, ACD_URB_BUFFER_LEN, appledisplay_complete,
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 		pdata, 1);
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+	pdata->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
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 	if (usb_submit_urb(pdata->urb, GFP_KERNEL)) {
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 		retval = -EIO;
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 		dev_err(&iface->dev, "Submitting URB failed\n");
..
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@@ -311,8 +305,7 @@
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 		if (pdata->urb) {
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 			usb_kill_urb(pdata->urb);
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 			cancel_delayed_work_sync(&pdata->work);
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-			if (pdata->urbdata)
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-				usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
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+			usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
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 					pdata->urbdata, pdata->urb->transfer_dma);
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 			usb_free_urb(pdata->urb);
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 		}
..
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@@ -349,20 +342,8 @@
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 	.disconnect	= appledisplay_disconnect,
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 	.id_table	= appledisplay_table,
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 };
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-
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-static int __init appledisplay_init(void)
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-{
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-	return usb_register(&appledisplay_driver);
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-}
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-
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-static void __exit appledisplay_exit(void)
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-{
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-	usb_deregister(&appledisplay_driver);
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-}
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+module_usb_driver(appledisplay_driver);
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 MODULE_AUTHOR("Michael Hanselmann");
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 MODULE_DESCRIPTION("Apple Cinema Display driver");
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 MODULE_LICENSE("GPL");
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-
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-module_init(appledisplay_init);
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-module_exit(appledisplay_exit);