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[PATCH 024/102] ath9k_hw: prevent reset control register zeroing on AR9003 reset

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From: Senthil Balasubramanian <senthilkumar@xxxxxxxxxxx>

Also, no need for the udelay(2) on AR9003 hardware.

Signed-off-by: Senthil Balasubramanian <senthilkumar@xxxxxxxxxxx>
Signed-off-by: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
---
 drivers/net/wireless/ath/ath9k/hw.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 207116a..6efb291 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1432,9 +1432,11 @@ static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
 		REG_WRITE(ah, AR_RC, AR_RC_AHB);
 
 	REG_WRITE(ah, AR_RTC_RESET, 0);
-	udelay(2);
 
-	if (!AR_SREV_9100(ah))
+	if (!AR_SREV_9300_20_OR_LATER(ah))
+		udelay(2);
+
+	if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
 		REG_WRITE(ah, AR_RC, 0);
 
 	REG_WRITE(ah, AR_RTC_RESET, 1);
-- 
1.6.3.3

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