From 92ab495e37c8a3596c1d6a67a5448f499dab6f3d Mon Sep 17 00:00:00 2001
From: Lincoln Tran <linctran@codeaurora.org>
Date: Wed, 22 Apr 2020 15:42:57 -0700
Subject: [PATCH] qcacld-3.0: Fix potential NULL pointer dereference

Add check to ensure context pointer is not NULL before dereferencing

Change-Id: I737ae4d1e5aa07bcbbe612a93905a23fa857b90a
CRs-fixed: 2669214
---
 core/sap/src/sap_module.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/sap/src/sap_module.c b/core/sap/src/sap_module.c
index e2ede6d9157a..26cdb601c18e 100644
--- a/core/sap/src/sap_module.c
+++ b/core/sap/src/sap_module.c
@@ -3004,6 +3004,11 @@ qdf_freq_t wlansap_get_chan_band_restrict(struct sap_context *sap_ctx)
 		return 0;
 
 	mac = cds_get_context(QDF_MODULE_ID_PE);
+	if (!mac) {
+		sap_err("Invalid MAC context");
+		return 0;
+	}
+
 	if (ucfg_reg_get_curr_band(mac->pdev, &band) != QDF_STATUS_SUCCESS) {
 		sap_err("Failed to get current band config");
 		return 0;