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path: root/payloads/libpayload/drivers/usb/usbhid.c
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Diffstat (limited to 'payloads/libpayload/drivers/usb/usbhid.c')
-rw-r--r--payloads/libpayload/drivers/usb/usbhid.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/payloads/libpayload/drivers/usb/usbhid.c b/payloads/libpayload/drivers/usb/usbhid.c
index 51c3d46c25..0785df7b58 100644
--- a/payloads/libpayload/drivers/usb/usbhid.c
+++ b/payloads/libpayload/drivers/usb/usbhid.c
@@ -468,15 +468,18 @@ usb_hid_init (usbdev_t *dev)
dev->destroy = usb_hid_destroy;
dev->poll = usb_hid_poll;
int i;
- for (i = 0; i <= dev->num_endp; i++) {
- if (dev->endpoints[i].endpoint == 0)
- continue;
+ for (i = 1; i < dev->num_endp; i++) {
if (dev->endpoints[i].type != INTERRUPT)
continue;
if (dev->endpoints[i].direction != IN)
continue;
break;
}
+ if (i >= dev->num_endp) {
+ usb_debug ("Could not find HID endpoint\n");
+ usb_detach_device (dev->controller, dev->address);
+ return;
+ }
usb_debug (" found endpoint %x for interrupt-in\n", i);
/* 20 buffers of 8 bytes, for every 10 msecs */
HID_INST(dev)->queue = dev->controller->create_intr_queue (&dev->endpoints[i], 8, 20, 10);