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ath9k: Do not assign noise for NULL caldata

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commit d3bcb7b24b upstream.

ah->noise is maintained globally and not per-channel. This
is updated in the reset() routine after the NF history has been
filled for the *current channel*, just before switching to
the new channel. There is no need to do it inside getnf(), since
ah->noise must contain a value for the new channel.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sujith Manoharan 2013-06-10 13:49:40 +05:30 committed by Greg Kroah-Hartman
parent 13311514a7
commit 64ea2992a2
1 changed files with 0 additions and 1 deletions
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drivers/net/wireless/ath/ath9k/calib.c
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@ -387,7 +387,6 @@ bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan)
if (!caldata) {
chan->noisefloor = nf;
ah->noise = ath9k_hw_getchan_noise(ah, chan);
return false;
}