3.18-stable review patch. If anyone has any objections, please let me know.
------------------ From: Arvind Yadav <[email protected]> commit 58fd55e838276a0c13d1dc7c387f90f25063cbf3 upstream. It seems that the return value of usb_ifnum_to_if() can be NULL and needs to be checked. Signed-off-by: Arvind Yadav <[email protected]> Tested-by: Andrey Konovalov <[email protected]> Signed-off-by: Sean Young <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> Cc: Ben Hutchings <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/media/rc/imon.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/media/rc/imon.c +++ b/drivers/media/rc/imon.c @@ -2419,6 +2419,11 @@ static int imon_probe(struct usb_interfa mutex_lock(&driver_lock); first_if = usb_ifnum_to_if(usbdev, 0); + if (!first_if) { + ret = -ENODEV; + goto fail; + } + first_if_ctx = usb_get_intfdata(first_if); if (ifnum == 0) {
