From 52a6966c350624db89addc3e6a825f5e797a73e4 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Sun, 12 Jan 2014 10:07:50 +0100 Subject: [PATCH] usb: core: bail out if user gives an unknown RefId when using new_id 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 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/driver.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 9b29e5c94be7..620a0baf103e 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -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); -- 2.39.5