qcacld-2.0: SSR-protect wlan_hdd_cfg80211_disable_dfs_chan_scan()

Currently wlan_hdd_cfg80211_disable_dfs_chan_scan() does not use the
SSR protection wrapper. This can lead to unexpected behavior if the
function is executing concurrently with SSR, so add the SSR protection
wrapper.

Change-Id: I6edb9b00b54a5b450ef5c2046b7bfd107702a2df
CRs-Fixed: 889507

1 files changed, 34 insertions, 5 deletions

diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index e23bf0e27431..51c01f4a9f27 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -7378,7 +7378,7 @@ int wlan_hdd_disable_dfs_chan_scan(hdd_context_t *pHddCtx,
 }
 
 /**
- * wlan_hdd_cfg80211_disable_dfs_chan_scan () - DFS scan vendor command
+ * __wlan_hdd_cfg80211_disable_dfs_chan_scan () - DFS scan vendor command
  *
  * @wiphy: wiphy device pointer
  * @wdev: wireless device pointer
@@ -7391,10 +7391,10 @@ int wlan_hdd_disable_dfs_chan_scan(hdd_context_t *pHddCtx,
  * Return: EOK or other error codes.
  */
 
-static int wlan_hdd_cfg80211_disable_dfs_chan_scan(struct wiphy *wiphy,
-                                                  struct wireless_dev *wdev,
-                                                  const void *data,
-                                                  int data_len)
+static int __wlan_hdd_cfg80211_disable_dfs_chan_scan(struct wiphy *wiphy,
+						     struct wireless_dev *wdev,
+						     const void *data,
+						     int data_len)
 {
     struct net_device *dev = wdev->netdev;
     hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev);
@@ -7440,6 +7440,35 @@ static int wlan_hdd_cfg80211_disable_dfs_chan_scan(struct wiphy *wiphy,
     return ret_val;
 }
 
+/**
+ * wlan_hdd_cfg80211_disable_dfs_chan_scan () - DFS scan vendor command
+ *
+ * @wiphy: wiphy device pointer
+ * @wdev: wireless device pointer
+ * @data: Vendof command data buffer
+ * @data_len: Buffer length
+ *
+ * Handles QCA_WLAN_VENDOR_ATTR_SET_NO_DFS_FLAG_MAX. Validate it and
+ * call wlan_hdd_disable_dfs_chan_scan to send it to firmware.
+ *
+ * Return: EOK or other error codes.
+ */
+
+static int wlan_hdd_cfg80211_disable_dfs_chan_scan(struct wiphy *wiphy,
+						   struct wireless_dev *wdev,
+						   const void *data,
+						   int data_len)
+{
+	int ret;
+
+	vos_ssr_protect(__func__);
+	ret = __wlan_hdd_cfg80211_disable_dfs_chan_scan(wiphy, wdev,
+							data, data_len);
+	vos_ssr_unprotect(__func__);
+
+	return ret;
+}
+
 static int wlan_hdd_config_acs(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter)
 {
     tsap_Config_t *sap_config;