ath10k: dma unmap mgmt tx buffer if wmi cmd send fails

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WCN3990 sends mgmt frames by reference via WMI.
The host dma maps the mgmt frame and sends the physical
address to the firmware in the wmi command. Since the
dma mapping is done in the gen_mgmt_tx and if the wmi
command send fails, the corresponding mgmt frame is
not being dma unmapped.

Fix the missing dma unmapping of mgmt tx frame when
wmi command sending fails for mgmt tx by reference
via WMI. The already exisiting mgmt tx using copy by
value does not need such dma unmapping.
Add a separate wmi-tlv op for mgmt tx via ref, which
takes care of unmapping the dma address, in case of
wmi command sending failure.

Signed-off-by: Rakesh Pillai <pillair@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

...

This commit is contained in:

Rakesh Pillai 2018-02-27 19:09:07 +02:00 • committed by Kalle Valo

parent 3a3b745f1e

commit 38a1390e02

3 changed files with 60 additions and 26 deletions

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28

drivers/net/wireless/ath/ath10k/mac.c

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36

drivers/net/wireless/ath/ath10k/wmi-ops.h

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22

drivers/net/wireless/ath/ath10k/wmi-tlv.c

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