[ 061/110] ath9k: avoid accessing MRC registers on single-chain devices
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2013-09-25 01:06:21
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3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Felix Fietkau <redacted> commit a1c781bb20ac1e03280e420abd47a99eb8bbdd3b upstream. They are not implemented, and accessing them might trigger errors Signed-off-by: Felix Fietkau <redacted> Signed-off-by: John W. Linville <redacted> 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,