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usb: core: bail out if user gives an unknown RefId when using new_id

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If users use the new RefId feature of new_id, give them an error message
if they provided an unknown reference. That helps detecting typos.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wolfram Sang 2014-01-12 10:07:50 +01:00 committed by Greg Kroah-Hartman
parent 2fc82c2de6
commit 52a6966c35
1 changed files with 6 additions and 3 deletions
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9
drivers/usb/core/driver.c
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@ -74,10 +74,13 @@ ssize_t usb_store_new_id(struct usb_dynids *dynids,
const struct usb_device_id *id = id_table;
for (; id->match_flags; id++)
if (id->idVendor == refVendor && id->idProduct == refProduct) {
dynid->id.driver_info = id->driver_info;
if (id->idVendor == refVendor && id->idProduct == refProduct)
break;
}
if (id->match_flags)
dynid->id.driver_info = id->driver_info;
else
return -ENODEV;
}
spin_lock(&dynids->lock);