| From a1c781bb20ac1e03280e420abd47a99eb8bbdd3b Mon Sep 17 00:00:00 2001 |
| From: Felix Fietkau <nbd@openwrt.org> |
| Date: Tue, 13 Aug 2013 12:33:28 +0200 |
| Subject: ath9k: avoid accessing MRC registers on single-chain devices |
| |
| 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| 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 |
| @@ -1076,6 +1076,10 @@ 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, |
