From ce85788846ec19dcb7bef0dcbcf83fb64630f426 Mon Sep 17 00:00:00 2001
From: Alexander Bondar <alexander.bondar@intel.com>
Date: Mon, 6 May 2013 17:17:04 +0300
Subject: [PATCH] mac80211: enable power save only if DTIM period is available

Generally, the DTIM period is available after a beacon has
been received, and if no beacon has been received enabling
powersave is problematic anyway for synchronisation. Since
some drivers may require the DTIM period for powersave,
don't enable powersave until it becomes available in case
the scan/association managed to not receive a beacon.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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