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authorFelix Fietkau <nbd@openwrt.org>2013-08-13 12:33:28 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-09-26 17:15:33 -0700
commit08c44ff3a4f24f11a05d9d7969f2d2cd7471beba (patch)
treecb5f9a173c6a906b1f36a67a1d498bb785300bb7
parent0f528a11451069fc6ea66c40fb9ab518e9d335b3 (diff)
ath9k: avoid accessing MRC registers on single-chain devices
commit a1c781bb20ac1e03280e420abd47a99eb8bbdd3b upstream. They are not implemented, and accessing them might trigger errors Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_phy.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index f86ee0c7f314..503ff9f632f0 100644
--- 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 ath_hw *ah,
* 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,