From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Date: Wed, 14 Aug 2013 15:45:56 +0000 (+0530)
Subject: ath9k: Optimize LNA check
X-Git-Tag: v3.12-rc1~132^2~84^2^2~71
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3124df7962f7a58177073d54d451e1661ffb71f;p=pandora-kernel.git

ath9k: Optimize LNA check

The documentation for antenna diversity says:

"The decision of diversity is done at 802.11 preamble. So, for
11G/11B, for every MAC packet hardware will do a decision. But in
11N with aggregation, the decision is made only at the preamble and
all other MPDUs will use the same LNA as the first MPDU."

Make use of rs_firstaggr to avoid needlessly scanning for LNA
changes.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

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