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--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1326,6 +1326,16 @@ static void ath9k_hw_override_ini(struct
* Necessary to avoid issues on AR5416 2.0
*/
REG_WRITE(ah, 0x9800 + (651 << 2), 0x11);
+
+ /*
+ * Disable RIFS search on some chips to avoid baseband
+ * hang issues.
+ */
+ if (AR_SREV_9100(ah) || AR_SREV_9160(ah)) {
+ val = REG_READ(ah, AR_PHY_HEAVY_CLIP_FACTOR_RIFS);
+ val &= ~AR_PHY_RIFS_INIT_DELAY;
+ REG_WRITE(ah, AR_PHY_HEAVY_CLIP_FACTOR_RIFS, val);
+ }
}
static u32 ath9k_hw_def_ini_fixup(struct ath_hw *ah,
--- a/drivers/net/wireless/ath/ath9k/phy.h
+++ b/drivers/net/wireless/ath/ath9k/phy.h
@@ -384,6 +384,9 @@ bool ath9k_hw_set_rf_regs(struct ath_hw
#define AR_PHY_HEAVY_CLIP_ENABLE 0x99E0
+#define AR_PHY_HEAVY_CLIP_FACTOR_RIFS 0x99EC
+#define AR_PHY_RIFS_INIT_DELAY 0x03ff0000
+
#define AR_PHY_M_SLEEP 0x99f0
#define AR_PHY_REFCLKDLY 0x99f4
#define AR_PHY_REFCLKPD 0x99f8
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