USB: rndis: Free the rndis response queue during REMOTE_NDIS_RESET_MSG
When rndis data transfer is in progress, some Windows7 Host PC is not
sending the GET_ENCAPSULATED_RESPONSE command for receiving the response
for the previous SEND_ENCAPSULATED_COMMAND processed.
The rndis function driver appends each response for the
SEND_ENCAPSULATED_COMMAND in a queue. As the above process got corrupted,
the Host sends a REMOTE_NDIS_RESET_MSG command to do a soft-reset.
As the rndis response queue is not freed, the previous response is sent
as a part of this REMOTE_NDIS_RESET_MSG's reset response and the Host
blocks any more Rndis transfers.
Hence free the rndis response queue as a part of this soft-reset so that
the current response for REMOTE_NDIS_RESET_MSG is sent properly during the
response command.
Change-Id: I8eff3849db452fe01b7d1fe4140ef1f1ad3f4fd4
Signed-off-by: Rajkumar Raghupathy <raghup@codeaurora.org>
Signed-off-by: Xerox Lin <xerox_lin@htc.com>
diff --git a/drivers/usb/gadget/function/rndis.c b/drivers/usb/gadget/function/rndis.c
index 943c21a..31b3d550 100644
--- a/drivers/usb/gadget/function/rndis.c
+++ b/drivers/usb/gadget/function/rndis.c
@@ -681,6 +681,13 @@
rndis_reset_cmplt_type *resp;
rndis_resp_t *r;
+ u32 length;
+ u8 *xbuf;
+
+ /* drain the response queue */
+ while ((xbuf = rndis_get_next_response(configNr, &length)))
+ rndis_free_response(configNr, xbuf);
+
r = rndis_add_response(params, sizeof(rndis_reset_cmplt_type));
if (!r)
return -ENOMEM;