[PATCH] usb: hub add filter for device with specific VID&PID

[Ran Wang]

USB 2.0 Embedded Host PET Automated Test (CH6) 6.7.23 A-UUT "Unsupported
Device" Message require to stop enumerating device with VID=0x1a0a PID=0x0201
and pop message to declare this device is not supported.

Signed-off-by: Ran Wang <ran.wang_1@xxxxxxx>
---
 drivers/usb/core/hub.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index bbcfa63..3cda0da 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4982,6 +4982,18 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
 		if (status < 0)
 			goto loop;
 
+		 /* USB 2.0 Embedded Host PET Automated Test (CH6)
+		 * 6.7.23 A-UUT "Unsupported Device" Message
+		 * require to filter out below device when enumeration
+		 */
+		if ((udev->descriptor.idVendor == 0x1a0a)
+		 && (udev->descriptor.idProduct == 0x0201)) {
+			dev_err(&udev->dev, "This device is not supported: idVendor=0x%x idProduct=0x%x\n",
+				udev->descriptor.idVendor,
+				udev->descriptor.idProduct);
+			goto done;
+		}
+
 		if (udev->quirks & USB_QUIRK_DELAY_INIT)
 			msleep(2000);
 
-- 
2.7.4