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[097/145] ath9k: Do not assign noise for NULL caldata

Message ID 1374101277-7915-98-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa July 17, 2013, 10:47 p.m. UTC 
3.8.13.5 -stable 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: Kamal Mostafa <kamal@canonical.com>
---
 drivers/net/wireless/ath/ath9k/calib.c | 1 -
 1 file changed, 1 deletion(-)
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Patch

diff --git a/drivers/net/wireless/ath/ath9k/calib.c b/drivers/net/wireless/ath/ath9k/calib.c
index 1e85085..a393e87 100644
--- a/drivers/net/wireless/ath/ath9k/calib.c
+++ b/drivers/net/wireless/ath/ath9k/calib.c
@@ -389,7 +389,6 @@  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;
 	}