ath11k: fix potential wmi_mgmt_tx_queue race condition

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There is a potential race condition between skb_queue_len()
and skb_queue_tail(), the former may get old value before
updated by the latter.

So use skb_queue_len_lockless() instead. And also use '>=',
in case we queue a few SKBs simultaneously.

Found while discussing a similar fix for ath10k:
https://patchwork.kernel.org/project/linux-wireless/patch/1608515579-1066-1-git-send-email-miaoqing@codeaurora.org/

No functional changes, compile tested only.

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1613630709-704-1-git-send-email-miaoqing@codeaurora.org

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Miaoqing Pan 2021-02-18 14:45:09 +08:00 • committed by Kalle Valo

parent 097e9f0714

commit 3808a18043

1 changed files with 1 additions and 1 deletions

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drivers/net/wireless/ath/ath11k/mac.c

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