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

Kalle Valo kvalo at codeaurora.org
Wed Feb 28 05:07:09 PST 2018

pillair at codeaurora.org writes:

> From: Rakesh Pillai <pillair at codeaurora.org>
> 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 at codeaurora.org>

ath10k-check found two warnings, I fixed those in pending branch:

drivers/net/wireless/ath/ath10k/wmi-ops.h:130: Alignment should match open parenthesis
drivers/net/wireless/ath/ath10k/wmi-ops.h:380: Alignment should match open parenthesis

Kalle Valo

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