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Commit 90de740a authored by xerox_lin's avatar xerox_lin Committed by Amit Pundir
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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: default avatarRajkumar Raghupathy <raghup@codeaurora.org>
Signed-off-by: default avatarXerox Lin <xerox_lin@htc.com>
parent 0a6d1573

drivers/usb/gadget/function/rndis.c

+7 −0
Original line number Diff line number Diff line
@@ -681,6 +681,13 @@ static int rndis_reset_response(struct rndis_params *params, 
	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;