libertas: Update 11d info only when interface is active

reg_notifier can be called before the interface is up.
Handle this correctly by storing the requested country code, then
apply the relevant configuration when the interface is brought up.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/cfg.c

@@ -2180,13 +2180,15 @@ int lbs_reg_notifier(struct wiphy *wiphy,
 		struct regulatory_request *request)
 {
 	struct lbs_private *priv = wiphy_priv(wiphy);
-	int ret;
+	int ret = 0;
 
 	lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
 			"callback for domain %c%c\n", request->alpha2[0],
 			request->alpha2[1]);
 
-	ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
+	memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
+	if (lbs_iface_active(priv))
+		ret = lbs_set_11d_domain_info(priv);
 
 	lbs_deb_leave(LBS_DEB_CFG80211);
 	return ret;

drivers/net/wireless/libertas/cmd.c

@@ -733,15 +733,13 @@ int lbs_get_rssi(struct lbs_private *priv, s8 *rssi, s8 *nf)
  *  to the firmware
  *
  *  @priv:	pointer to &struct lbs_private
- *  @request:	cfg80211 regulatory request structure
- *  @bands:	the device's supported bands and channels
  *
  *  returns:	0 on success, error code on failure
 */
-int lbs_set_11d_domain_info(struct lbs_private *priv,
-			    struct regulatory_request *request,
-			    struct ieee80211_supported_band **bands)
+int lbs_set_11d_domain_info(struct lbs_private *priv)
 {
+	struct wiphy *wiphy = priv->wdev->wiphy;
+	struct ieee80211_supported_band **bands = wiphy->bands;
 	struct cmd_ds_802_11d_domain_info cmd;
 	struct mrvl_ie_domain_param_set *domain = &cmd.domain;
 	struct ieee80211_country_ie_triplet *t;
@@ -752,21 +750,23 @@ int lbs_set_11d_domain_info(struct lbs_private *priv,
 	u8 first_channel = 0, next_chan = 0, max_pwr = 0;
 	u8 i, flag = 0;
 	size_t triplet_size;
-	int ret;
+	int ret = 0;
 
 	lbs_deb_enter(LBS_DEB_11D);
+	if (!priv->country_code[0])
+		goto out;
 
 	memset(&cmd, 0, sizeof(cmd));
 	cmd.action = cpu_to_le16(CMD_ACT_SET);
 
 	lbs_deb_11d("Setting country code '%c%c'\n",
-		    request->alpha2[0], request->alpha2[1]);
+		    priv->country_code[0], priv->country_code[1]);
 
 	domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
 
 	/* Set country code */
-	domain->country_code[0] = request->alpha2[0];
-	domain->country_code[1] = request->alpha2[1];
+	domain->country_code[0] = priv->country_code[0];
+	domain->country_code[1] = priv->country_code[1];
 	domain->country_code[2] = ' ';
 
 	/* Now set up the channel triplets; firmware is somewhat picky here
@@ -848,6 +848,7 @@ int lbs_set_11d_domain_info(struct lbs_private *priv,
 
 	ret = lbs_cmd_with_response(priv, CMD_802_11D_DOMAIN_INFO, &cmd);
 
+out:
 	lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
 	return ret;
 }

drivers/net/wireless/libertas/cmd.h

@@ -128,9 +128,7 @@ int lbs_set_monitor_mode(struct lbs_private *priv, int enable);
 
 int lbs_get_rssi(struct lbs_private *priv, s8 *snr, s8 *nf);
 
-int lbs_set_11d_domain_info(struct lbs_private *priv,
-			    struct regulatory_request *request,
-			    struct ieee80211_supported_band **bands);
+int lbs_set_11d_domain_info(struct lbs_private *priv);
 
 int lbs_get_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 *value);
 

drivers/net/wireless/libertas/dev.h

@@ -49,6 +49,7 @@ struct lbs_private {
 	bool wiphy_registered;
 	struct cfg80211_scan_request *scan_req;
 	u8 assoc_bss[ETH_ALEN];
+	u8 country_code[IEEE80211_COUNTRY_STRING_LEN];
 	u8 disassoc_reason;
 
 	/* Mesh */

drivers/net/wireless/libertas/main.c

@@ -152,6 +152,12 @@ int lbs_start_iface(struct lbs_private *priv)
 		goto err;
 	}
 
+	ret = lbs_set_11d_domain_info(priv);
+	if (ret) {
+		lbs_deb_net("set 11d domain info failed\n");
+		goto err;
+	}
+
 	lbs_update_channel(priv);
 
 	priv->iface_running = true;