[PATCH] usb: gadget: fix wrong endpoint desc

[EJ Hsu <ejh@nvidia.com>]

Gadget driver should always use config_ep_by_speed() to initialize
usb_ep struct according to usb device's operating speed. Otherwise,
usb_ep struct may be wrong if usb devcie's operating speed is changed.

Signed-off-by: EJ Hsu <ejh@nvidia.com>
---
 drivers/usb/gadget/function/f_ecm.c   | 4 ++++
 drivers/usb/gadget/function/f_rndis.c | 1 +
 2 files changed, 5 insertions(+)

diff --git a/drivers/usb/gadget/function/f_ecm.c b/drivers/usb/gadget/function/f_ecm.c
index 6ce044008cf6..494fe4e38a65 100644
--- a/drivers/usb/gadget/function/f_ecm.c
+++ b/drivers/usb/gadget/function/f_ecm.c
@@ -623,6 +623,10 @@ static void ecm_disable(struct usb_function *f)
 
 	if (ecm->port.in_ep->enabled)
 		gether_disconnect(&ecm->port);
+	else {
+		ecm->port.in_ep->desc = NULL;
+		ecm->port.out_ep->desc = NULL;
+	}
 
 	usb_ep_disable(ecm->notify);
 	ecm->notify->desc = NULL;
diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c
index d48df36622b7..0d8e4a364ca6 100644
--- a/drivers/usb/gadget/function/f_rndis.c
+++ b/drivers/usb/gadget/function/f_rndis.c
@@ -618,6 +618,7 @@ static void rndis_disable(struct usb_function *f)
 	gether_disconnect(&rndis->port);
 
 	usb_ep_disable(rndis->notify);
+	rndis->notify->desc = NULL;
 }
 
 /*-------------------------------------------------------------------------*/
-- 
2.17.1