From 38aa9f368858d3bb53cca0dee66e6196fcf4d5f5 Mon Sep 17 00:00:00 2001
From: Adrian Chadd <adrian@FreeBSD.org>
Date: Tue, 21 May 2013 05:51:49 +0000
Subject: [PATCH] Extend the TXOP enforce capability to support checking
 whether it's supported.

---
 sys/dev/ath/ath_hal/ar5416/ar5416_misc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/dev/ath/ath_hal/ar5416/ar5416_misc.c b/sys/dev/ath/ath_hal/ar5416/ar5416_misc.c
index 6f47c5c8b8a7..66f1d6218ec1 100644
--- a/sys/dev/ath/ath_hal/ar5416/ar5416_misc.c
+++ b/sys/dev/ath/ath_hal/ar5416/ar5416_misc.c
@@ -466,6 +466,10 @@ ar5416GetCapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
 	case HAL_CAP_DIVERSITY:		/* disable classic fast diversity */
 		return HAL_ENXIO;
 	case HAL_CAP_ENFORCE_TXOP:
+		if (capability == 0)
+			return (HAL_OK);
+		if (capability != 1)
+			return (HAL_ENOTSUPP);
 		(*result) =
 		    !! (AH5212(ah)->ah_miscMode & AR_PCU_TXOP_TBTT_LIMIT_ENA);
 		return (HAL_OK);
@@ -499,6 +503,8 @@ ar5416SetCapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
 			pCap->halTxStreams = 1;
 		return AH_TRUE;
 	case HAL_CAP_ENFORCE_TXOP:
+		if (capability != 1)
+			return (HAL_ENOTSUPP);
 		if (setting) {
 			AH5212(ah)->ah_miscMode
 			    |= AR_PCU_TXOP_TBTT_LIMIT_ENA;