ath9k_hw: Fix a reset failure on AR9382 (2x2).
AR9382 needs to be configured for the correct chain mask before
running AGC/TxIQ caliberation. Otherwise reset would fail.
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 9e6edff..32eed19 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -718,12 +718,19 @@
struct ath9k_channel *chan)
{
struct ath_common *common = ath9k_hw_common(ah);
+ int val;
- /*
- * 0x7 = 0b111 , AR9003 needs to be configured for 3-chain mode before
- * running AGC/TxIQ cals
- */
- ar9003_hw_set_chain_masks(ah, 0x7, 0x7);
+ val = REG_READ(ah, AR_ENT_OTP);
+ ath_print(common, ATH_DBG_CALIBRATE, "ath9k: AR_ENT_OTP 0x%x\n", val);
+
+ if (val & AR_ENT_OTP_CHAIN2_DISABLE)
+ ar9003_hw_set_chain_masks(ah, 0x3, 0x3);
+ else
+ /*
+ * 0x7 = 0b111 , AR9003 needs to be configured for 3-chain
+ * mode before running AGC/TxIQ cals
+ */
+ ar9003_hw_set_chain_masks(ah, 0x7, 0x7);
/* Do Tx IQ Calibration */
ar9003_hw_tx_iq_cal(ah);