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USB: cdc-acm: more sanity checking
[pandora-kernel.git]
/
drivers
/
usb
/
class
/
cdc-acm.c
diff --git
a/drivers/usb/class/cdc-acm.c
b/drivers/usb/class/cdc-acm.c
index
bbb2174
..
3d96de0
100644
(file)
--- a/
drivers/usb/class/cdc-acm.c
+++ b/
drivers/usb/class/cdc-acm.c
@@
-926,6
+926,9
@@
static int acm_probe(struct usb_interface *intf,
if (quirks == NO_UNION_NORMAL) {
data_interface = usb_ifnum_to_if(usb_dev, 1);
control_interface = usb_ifnum_to_if(usb_dev, 0);
+ /* we would crash */
+ if (!data_interface || !control_interface)
+ return -ENODEV;
goto skip_normal_probe;
}