Patch "ath9k: avoid accessing MRC registers on single-chain devices" has been added to the 3.4-stable tree

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This is a note to let you know that I've just added the patch titled

    ath9k: avoid accessing MRC registers on single-chain devices

to the 3.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ath9k-avoid-accessing-mrc-registers-on-single-chain-devices.patch
and it can be found in the queue-3.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From a1c781bb20ac1e03280e420abd47a99eb8bbdd3b Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@xxxxxxxxxxx>
Date: Tue, 13 Aug 2013 12:33:28 +0200
Subject: ath9k: avoid accessing MRC registers on single-chain devices

From: Felix Fietkau <nbd@xxxxxxxxxxx>

commit a1c781bb20ac1e03280e420abd47a99eb8bbdd3b upstream.

They are not implemented, and accessing them might trigger errors

Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/net/wireless/ath/ath9k/ar9003_phy.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -1030,6 +1030,10 @@ static bool ar9003_hw_ani_control(struct
 		 * is_on == 0 means MRC CCK is OFF (more noise imm)
 		 */
 		bool is_on = param ? 1 : 0;
+
+		if (ah->caps.rx_chainmask == 1)
+			break;
+
 		REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
 			      AR_PHY_MRC_CCK_ENABLE, is_on);
 		REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,


Patches currently in stable-queue which might be from nbd@xxxxxxxxxxx are

queue-3.4/ath9k-fix-rx-descriptor-related-race-condition.patch
queue-3.4/ath9k-always-clear-ps-filter-bit-on-new-assoc.patch
queue-3.4/ath9k-avoid-accessing-mrc-registers-on-single-chain-devices.patch
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