From: Luis R. Rodriguez <lrodriguez@atheros.com>
Date: Mon, 21 Jun 2010 22:38:51 +0000 (-0400)
Subject: ath9k_hw: add an extra delay when reseting AR_RTC_RESET
X-Git-Tag: MMI-PSA29.97-13-9~23092^2~107^2~167
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ee031112d9eef5508f765ebc90ab488e01db002e;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

ath9k_hw: add an extra delay when reseting AR_RTC_RESET

Without this we could start trying to work with the device without
it being fully functional yet and loose some packets upon resume.

Cc: Aeolus Yang <aeolus.yang@atheros.com>
Cc: Madhan Jaganathan <madhan.jaganathan@atheros.com>
signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index e9764dc43121..1ed144038c36 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1070,6 +1070,7 @@ 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);
 
 	REGWRITE_BUFFER_FLUSH(ah);
 	DISABLE_REGWRITE_BUFFER(ah);