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qcacmn: Fix double dmap problem in htc

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For control messages, a path in HTC was performing double dmamaps
and this was, in time, causing dmamap failures on SMMU.

Change-Id: I19f7e13a0a19404fe1161127b10f52225b6a4248
CRs-Fixed: 2151773
This commit is contained in:
Dustin Brown 2017-12-02 22:43:26 -08:00 • committed by snandini
commit 8969ad7fa8
1 changed files with 13 additions and 8 deletions
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21
htc/htc_send.c
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@ -1500,15 +1500,20 @@ static inline QDF_STATUS __htc_send_pkt(HTC_HANDLE HTCHandle,
* Now that the HTC frame header has been added, the netbuf can
* be mapped. This only applies to non-data frames, since data
* frames were already mapped as they entered into the driver.
* For flow control enabled endpoints mapping is done in
* htc_issue_packets and for non flow control enabled endpoints
* its done here.
*/
status = qdf_nbuf_map(target->osdev,
GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket),
QDF_DMA_TO_DEVICE);
if (status != QDF_STATUS_SUCCESS) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
("%s: nbuf map failed, endpoint %pK, seq_no. %d\n",
__func__, pEndpoint, pEndpoint->SeqNo));
return status;
if (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) {
status = qdf_nbuf_map(target->osdev,
GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket),
QDF_DMA_TO_DEVICE);
if (status != QDF_STATUS_SUCCESS) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
("%s: nbuf map failed, endpoint %pK, seq_no. %d\n",
__func__, pEndpoint, pEndpoint->SeqNo));
return status;
}
}
pPacket->PktInfo.AsTx.Flags |= HTC_TX_PACKET_FLAG_FIXUP_NETBUF;