mac80211: Reset dynamic ps timer in Rx path.
The current mac80211 implementation enables power save if there is no Tx traffic for a specific timeout. Hence, PS is triggered even if there is a continuous Rx only traffic(like UDP) going on. This makes the drivers to wait on the tim bit in the next beacon to awake which leads to redundant sleep-wake cycles. Fix this by restarting the dynamic ps timer on receiving every data packet. Signed-off-by: NVivek Natarajan <vnatarajan@atheros.com> CC: stable@kernel.org Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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