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usb: gadget: g_dnl: only set iSerialNumber if we have a serial#

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We don't want to claim that we support a serial number string and
later return nothing. Because of that, if g_dnl_serial is an empty
string, let's skip setting iSerialNumber to a valid number.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2017-02-22 17:12:40 +02:00 committed by Marek Vasut
parent 12d0b8f5f0
commit 842778a091
1 changed files with 7 additions and 5 deletions
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12
drivers/usb/gadget/g_dnl.c
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@ -224,12 +224,14 @@ static int g_dnl_bind(struct usb_composite_dev *cdev)
g_dnl_string_defs[1].id = id;
device_desc.iProduct = id;
id = usb_string_id(cdev);
if (id < 0)
return id;
if (strlen(g_dnl_serial)) {
id = usb_string_id(cdev);
if (id < 0)
return id;
g_dnl_string_defs[2].id = id;
device_desc.iSerialNumber = id;
g_dnl_string_defs[2].id = id;
device_desc.iSerialNumber = id;
}
g_dnl_bind_fixup(&device_desc, cdev->driver->name);
ret = g_dnl_config_register(cdev);