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[18/93] ath9k: avoid accessing MRC registers on single-chain devices

Message ID 1379707768-1804-19-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa Sept. 20, 2013, 8:08 p.m. UTC 
3.8.13.10 -stable review patch.  If anyone has any objections, please let me know.

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

From: Felix Fietkau <nbd@openwrt.org>

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: Kamal Mostafa <kamal@canonical.com>
---
 drivers/net/wireless/ath/ath9k/ar9003_phy.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 3afc24b..e962502 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -1072,6 +1072,10 @@  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,