From 10e2318103f5941aa70c318afe34bc41f1b98529 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 11 Nov 2013 22:23:35 +0100
Subject: [PATCH] ath9k: optimize ath9k_flush

Instead of checking the queues in a loop with hardcoded sleep times
inbetween, use a wait queue to trigger queue checks after the tx
processing tasklet has run.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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