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Subject[20/85] ath9k: Do not assign noise for NULL caldata
3.2.49-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Sujith Manoharan <c_manoha@qca.qualcomm.com>

commit d3bcb7b24bbf09fde8405770e676fe0c11c79662 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: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/wireless/ath/ath9k/calib.c | 1 -
1 file changed, 1 deletion(-)

--- a/drivers/net/wireless/ath/ath9k/calib.c
+++ b/drivers/net/wireless/ath/ath9k/calib.c
@@ -391,7 +391,6 @@ bool ath9k_hw_getnf(struct ath_hw *ah, s

if (!caldata) {
chan->noisefloor = nf;
- ah->noise = ath9k_hw_getchan_noise(ah, chan);
return false;
}



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