commit 99ba6a4610c8413c9166e600b1797f0a8f1c4498
author Felix Fietkau <nbd@openwrt.org> Mon Apr 08 00:04:13 2013 +0200
committer John W. Linville <linville@tuxdriver.com> Wed Apr 10 14:10:34 2013 -0400
tree f2558b71b322a0102751faf6754bc6da82209ce6
parent 3747c3eef6df9bf936fc571ab64122e651db6137

ath9k: implement buffer holding handling for EDMA FIFO

Inside one FIFO slot queue, EDMA chipsets have the same link pointer
re-read race condition as older chipsets, so the same buffer holding
logic needs to be used in order to avoid use-after-free bugs.
Unlike on older chips, it can be skipped for the end of the queue.

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