[PATCH 1/2] usb: gadget: initialize serialnumber as empty string

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Windows hosts do require the serial number to be set to any ascii string
to enumerate correctly. Set the serial number to "empty" to provide a
sane default which works for both hosts. Users can still override this
via the gadget.serialnumber variable.

Reported-by: Andrey Zhizhikin <andrey.zhizhikin@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
 drivers/usb/gadget/udc/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
index b58498680ad1..dc5d1daa14bf 100644
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@@ -1204,7 +1204,7 @@ int usb_add_gadget(struct usb_gadget *gadget)
 	gadget->productname = xstrdup(barebox_get_model());
 	dev_add_param_string(&gadget->dev, "productname", NULL, NULL,
 			     &gadget->productname, NULL);
-	gadget->serialnumber = xstrdup("");
+	gadget->serialnumber = xstrdup("empty");
 	dev_add_param_string(&gadget->dev, "serialnumber", NULL, NULL,
 			     &gadget->serialnumber, NULL);
 
-- 
2.39.2





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