bootloader: don't crash on empty usb queue

6 years ago · f6f6e8593a
parent 9fcb59c3ca
commit f6f6e8593a
1 changed files with 3 additions and 1 deletions
--- a/embed/bootloader/main.c
+++ b/embed/bootloader/main.c
@ -210,7 +210,9 @@ static secbool bootloader_loop(secbool firmware_present)
 #else
        int r = usb_hid_read_blocking(USB_IFACE_NUM, buf, USB_PACKET_SIZE, USB_TIMEOUT);
 #endif
-        ensure(sectrue * (r == USB_PACKET_SIZE), NULL);
+        if (r != USB_PACKET_SIZE) {
+            continue;
+        }
        uint16_t msg_id;
        uint32_t msg_size;
        if (sectrue != msg_parse_header(buf, &msg_id, &msg_size)) {