From: Rakesh Pillai <pillair@codeaurora.org>
Date: Fri, 25 Jan 2019 04:21:06 +0000 (+0530)
Subject: ath10k: fix dma unmap direction for management frames
X-Git-Tag: v5.4-rc1~1543^2~131^2~76^2~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6e8a8991e2103dcb6a9cff28f460390e8e360848;p=platform%2Fkernel%2Flinux-rpi.git

ath10k: fix dma unmap direction for management frames

The management frames transmitted are dma mapped with
direction TO_DEVICE, but incorrectly mapped with
direction FROM_DEVICE during tx complete and error cases.

Fix the direction of dma during dma unmap of the
transmitted management frames.

Tested HW: WCN3990
Tested FW: WLAN.HL.2.0-01188-QCAHLSWMTPLZ-1

Fixes: 38a1390e02b7 ("ath10k: dma unmap mgmt tx buffer if wmi cmd send fails")
Signed-off-by: Rakesh Pillai <pillair@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index e49b367..8c6c515 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -1,7 +1,7 @@
 /*
  * Copyright (c) 2005-2011 Atheros Communications Inc.
  * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
- * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -3863,7 +3863,7 @@ void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work)
 				ath10k_warn(ar, "failed to transmit management frame by ref via WMI: %d\n",
 					    ret);
 				dma_unmap_single(ar->dev, paddr, skb->len,
-						 DMA_FROM_DEVICE);
+						 DMA_TO_DEVICE);
 				ieee80211_free_txskb(ar->hw, skb);
 			}
 		} else {
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 971ff36..6509feb 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -1,7 +1,7 @@
 /*
  * Copyright (c) 2005-2011 Atheros Communications Inc.
  * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
- * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -2346,7 +2346,7 @@ static int wmi_process_mgmt_tx_comp(struct ath10k *ar, u32 desc_id,
 
 	msdu = pkt_addr->vaddr;
 	dma_unmap_single(ar->dev, pkt_addr->paddr,
-			 msdu->len, DMA_FROM_DEVICE);
+			 msdu->len, DMA_TO_DEVICE);
 	info = IEEE80211_SKB_CB(msdu);
 
 	if (status)