add new system file

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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/video/fbdev/udlfb.c
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@@ -27,6 +27,8 @@
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 #include <video/udlfb.h>
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 #include "edid.h"
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+#define OUT_EP_NUM	1	/* The endpoint number we will use */
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+
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 static const struct fb_fix_screeninfo dlfb_fix = {
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 	.id =           "udlfb",
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 	.type =         FB_TYPE_PACKED_PIXELS,
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@@ -1651,7 +1653,7 @@
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 	struct fb_info *info;
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 	int retval;
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 	struct usb_device *usbdev = interface_to_usbdev(intf);
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-	struct usb_endpoint_descriptor *out;
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+	static u8 out_ep[] = {OUT_EP_NUM + USB_DIR_OUT, 0};
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 	/* usb initialization */
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 	dlfb = kzalloc(sizeof(*dlfb), GFP_KERNEL);
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@@ -1665,9 +1667,9 @@
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 	dlfb->udev = usb_get_dev(usbdev);
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 	usb_set_intfdata(intf, dlfb);
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-	retval = usb_find_common_endpoints(intf->cur_altsetting, NULL, &out, NULL, NULL);
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-	if (retval) {
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-		dev_err(&intf->dev, "Device should have at lease 1 bulk endpoint!\n");
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+	if (!usb_check_bulk_endpoints(intf, out_ep)) {
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+		dev_err(&intf->dev, "Invalid DisplayLink device!\n");
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+		retval = -EINVAL;
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 		goto error;
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 	}
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@@ -1926,7 +1928,8 @@
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 		}
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 		/* urb->transfer_buffer_length set to actual before submit */
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-		usb_fill_bulk_urb(urb, dlfb->udev, usb_sndbulkpipe(dlfb->udev, 1),
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+		usb_fill_bulk_urb(urb, dlfb->udev,
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+			usb_sndbulkpipe(dlfb->udev, OUT_EP_NUM),
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 			buf, size, dlfb_urb_completion, unode);
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 		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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