usb: gadget: f_dfu: set serial number if serial# is valid

With this patch, USB Command Verifier is happy with our DFU
implementation on Chapter 9 tests.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/gadget/f_dfu.c b/drivers/usb/gadget/f_dfu.c
index 81929d3e0daf564f45d912c94e827befe1d60fdc..dfa435957793db6ec2783ad3776e69c5f94bbdbd 100644 (file)
--- a/drivers/usb/gadget/f_dfu.c
+++ b/drivers/usb/gadget/f_dfu.c
@@ -691,6 +691,7 @@ static int dfu_bind(struct usb_configuration *c, struct usb_function *f)
 {
        struct usb_composite_dev *cdev = c->cdev;
        struct f_dfu *f_dfu = func_to_dfu(f);
+       const char *s;
        int alt_num = dfu_get_alt_number();
        int rv, id, i;
 
@@ -724,6 +725,10 @@ static int dfu_bind(struct usb_configuration *c, struct usb_function *f)
 
        cdev->req->context = f_dfu;
 
+       s = getenv("serial#");
+       if (s)
+               g_dnl_set_serialnumber((char *)s);
+
 error:
        return rv;
 }