mwifiex: set wiphy params only once

RTS threshold, fragmentation threshold are per device properties.
Setting them on any interface would be reflected for all other
interfaces as well. This patch removes unnesessary command download
per interface.
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/mwifiex/cfg80211.c

@@ -590,77 +590,62 @@ mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 	struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 	struct mwifiex_private *priv;
 	struct mwifiex_uap_bss_param *bss_cfg;
-	int ret, bss_started, i;
-
-	for (i = 0; i < adapter->priv_num; i++) {
-		priv = adapter->priv[i];
-
-		switch (priv->bss_role) {
-		case MWIFIEX_BSS_ROLE_UAP:
-			bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param),
-					  GFP_KERNEL);
-			if (!bss_cfg)
-				return -ENOMEM;
-
-			mwifiex_set_sys_config_invalid_data(bss_cfg);
-
-			if (changed & WIPHY_PARAM_RTS_THRESHOLD)
-				bss_cfg->rts_threshold = wiphy->rts_threshold;
-			if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
-				bss_cfg->frag_threshold = wiphy->frag_threshold;
-			if (changed & WIPHY_PARAM_RETRY_LONG)
-				bss_cfg->retry_limit = wiphy->retry_long;
-
-			bss_started = priv->bss_started;
-
-			ret = mwifiex_send_cmd(priv, HostCmd_CMD_UAP_BSS_STOP,
-					       HostCmd_ACT_GEN_SET, 0,
-					       NULL, true);
-			if (ret) {
-				wiphy_err(wiphy, "Failed to stop the BSS\n");
-				kfree(bss_cfg);
-				return ret;
-			}
+	int ret;
 
-			ret = mwifiex_send_cmd(priv, HostCmd_CMD_UAP_SYS_CONFIG,
-					       HostCmd_ACT_GEN_SET,
-					       UAP_BSS_PARAMS_I, bss_cfg,
-					       false);
+	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
-			kfree(bss_cfg);
+	switch (priv->bss_role) {
+	case MWIFIEX_BSS_ROLE_UAP:
+		if (priv->bss_started) {
+			dev_err(adapter->dev,
+				"cannot change wiphy params when bss started");
+			return -EINVAL;
+		}
 
-			if (ret) {
-				wiphy_err(wiphy, "Failed to set bss config\n");
-				return ret;
-			}
+		bss_cfg = kzalloc(sizeof(*bss_cfg), GFP_KERNEL);
+		if (!bss_cfg)
+			return -ENOMEM;
 
-			if (!bss_started)
-				break;
+		mwifiex_set_sys_config_invalid_data(bss_cfg);
 
-			ret = mwifiex_send_cmd(priv, HostCmd_CMD_UAP_BSS_START,
-					       HostCmd_ACT_GEN_SET, 0,
-					       NULL, false);
-			if (ret) {
-				wiphy_err(wiphy, "Failed to start BSS\n");
-				return ret;
-			}
+		if (changed & WIPHY_PARAM_RTS_THRESHOLD)
+			bss_cfg->rts_threshold = wiphy->rts_threshold;
+		if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
+			bss_cfg->frag_threshold = wiphy->frag_threshold;
+		if (changed & WIPHY_PARAM_RETRY_LONG)
+			bss_cfg->retry_limit = wiphy->retry_long;
+
+		ret = mwifiex_send_cmd(priv, HostCmd_CMD_UAP_SYS_CONFIG,
+				       HostCmd_ACT_GEN_SET,
+				       UAP_BSS_PARAMS_I, bss_cfg,
+				       false);
+
+		kfree(bss_cfg);
+		if (ret) {
+			wiphy_err(wiphy, "Failed to set wiphy phy params\n");
+			return ret;
+		}
+		break;
 
-			break;
 		case MWIFIEX_BSS_ROLE_STA:
-			if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
-				ret = mwifiex_set_rts(priv,
-						      wiphy->rts_threshold);
-				if (ret)
-					return ret;
-			}
-			if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
-				ret = mwifiex_set_frag(priv,
-						       wiphy->frag_threshold);
-				if (ret)
-					return ret;
-			}
-			break;
+		if (priv->media_connected) {
+			dev_err(adapter->dev,
+				"cannot change wiphy params when connected");
+			return -EINVAL;
+		}
+		if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
+			ret = mwifiex_set_rts(priv,
+					      wiphy->rts_threshold);
+			if (ret)
+				return ret;
 		}
+		if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
+			ret = mwifiex_set_frag(priv,
+					       wiphy->frag_threshold);
+			if (ret)
+				return ret;
+		}
+		break;
 	}
 
 	return 0;