From d43e165149c5843abe17ca1f93594a41cbf82ddd Mon Sep 17 00:00:00 2001
From: Mahesh Kumar Kalikot Veetil <mkalikot@qca.qualcomm.com>
Date: Mon, 2 Nov 2015 15:35:10 -0800
Subject: [PATCH] qcacld-3.0: Add backward compatibiilty to older FW

If DBS hwmode is not available from FW, return accrodingly in
wma_get_hw_mode_from_idx.

Change-Id: I603edd8a49bfd584300dcfc21c2b3c8c4c3c1892
CRs-Fixed: 934012
---
 core/wma/src/wma_utils.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/wma/src/wma_utils.c b/core/wma/src/wma_utils.c
index 5ab134190a24..c7b0a621fd6e 100644
--- a/core/wma/src/wma_utils.c
+++ b/core/wma/src/wma_utils.c
@@ -2797,6 +2797,11 @@ CDF_STATUS wma_get_hw_mode_from_idx(uint32_t idx,
 		return CDF_STATUS_E_FAILURE;
 	}
 
+	if (!wma->num_dbs_hw_modes) {
+		WMA_LOGE("%s: No dbs hw modes available", __func__);
+		return CDF_STATUS_E_FAILURE;
+	}
+
 	param = wma->hw_mode.hw_mode_list[idx];
 
 	hw_mode->mac0_tx_ss = WMI_DBS_HW_MODE_MAC0_TX_STREAMS_GET(param);