X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Finput%2Fmisc%2Fpowermate.c;h=84909a12ff36c231e7bcfc545bc2ce180c6cd26f;hb=fbd40d7beef0b17624bc1f838f4d44dfa4b0326b;hp=63b539d3dabae13ce7d1cb12fe19322f655043fd;hpb=3123bca71993c2346a458875488863772c1d5dc4;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c
index 63b539d3daba..84909a12ff36 100644
--- a/drivers/input/misc/powermate.c
+++ b/drivers/input/misc/powermate.c
@@ -307,6 +307,9 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
 	int error = -ENOMEM;
 
 	interface = intf->cur_altsetting;
+	if (interface->desc.bNumEndpoints < 1)
+		return -EINVAL;
+
 	endpoint = &interface->endpoint[0].desc;
 	if (!usb_endpoint_is_int_in(endpoint))
 		return -EIO;