diff --git a/lib/libusb/libusb.h b/lib/libusb/libusb.h
index 5f821b613586..d8a22b569839 100644
--- a/lib/libusb/libusb.h
+++ b/lib/libusb/libusb.h
@@ -340,7 +340,7 @@ typedef void (*libusb_transfer_cb_fn) (struct libusb_transfer *transfer);
 typedef struct libusb_transfer {
 	libusb_device_handle *dev_handle;
 	uint8_t	flags;
-	uint32_t endpoint;
+	uint8_t endpoint;
 	uint8_t type;
 	uint32_t timeout;
 	enum libusb_transfer_status status;
@@ -349,7 +349,6 @@ typedef struct libusb_transfer {
 	libusb_transfer_cb_fn callback;
 	void   *user_data;
 	uint8_t *buffer;
-	void *os_priv;
 	int	num_iso_packets;
 	struct libusb_iso_packet_descriptor iso_packet_desc[0];
 }	libusb_transfer __aligned(sizeof(void *));
diff --git a/lib/libusb/libusb10.c b/lib/libusb/libusb10.c
index 893160ee7921..44331bc6ad3c 100644
--- a/lib/libusb/libusb10.c
+++ b/lib/libusb/libusb10.c
@@ -1322,7 +1322,7 @@ libusb_submit_transfer(struct libusb_transfer *uxfer)
 	struct libusb20_transfer *pxfer1;
 	struct libusb_super_transfer *sxfer;
 	struct libusb_device *dev;
-	uint32_t endpoint;
+	uint8_t endpoint;
 	int err;
 
 	if (uxfer == NULL)
@@ -1333,9 +1333,6 @@ libusb_submit_transfer(struct libusb_transfer *uxfer)
 
 	endpoint = uxfer->endpoint;
 
-	if (endpoint > 255)
-		return (LIBUSB_ERROR_INVALID_PARAM);
-
 	dev = libusb_get_device(uxfer->dev_handle);
 
 	DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_submit_transfer enter");
@@ -1385,7 +1382,7 @@ libusb_cancel_transfer(struct libusb_transfer *uxfer)
 	struct libusb20_transfer *pxfer1;
 	struct libusb_super_transfer *sxfer;
 	struct libusb_device *dev;
-	uint32_t endpoint;
+	uint8_t endpoint;
 	int retval;
 
 	if (uxfer == NULL)
@@ -1397,9 +1394,6 @@ libusb_cancel_transfer(struct libusb_transfer *uxfer)
 
 	endpoint = uxfer->endpoint;
 
-	if (endpoint > 255)
-		return (LIBUSB_ERROR_INVALID_PARAM);
-
 	dev = libusb_get_device(uxfer->dev_handle);
 
 	DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_cancel_transfer enter");