5 files changed, 22 insertions, 31 deletions

diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index dbe4b3478f..e8f1d30a8d 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
@@ -892,10 +892,8 @@ static int wil_cfg80211_scan(struct wiphy *wiphy,
 	struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 	struct wireless_dev *wdev = request->wdev;
 	struct wil6210_vif *vif = wdev_to_vif(wil, wdev);
-	struct {
-		struct wmi_start_scan_cmd cmd;
-		u16 chnl[4];
-	} __packed cmd;
+	DEFINE_FLEX(struct wmi_start_scan_cmd, cmd,
+		    channel_list, num_channels, 4);
 	uint i, n;
 	int rc;
 
@@ -977,9 +975,8 @@ static int wil_cfg80211_scan(struct wiphy *wiphy,
 	vif->scan_request = request;
 	mod_timer(&vif->scan_timer, jiffies + WIL6210_SCAN_TO);
 
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.cmd.scan_type = WMI_ACTIVE_SCAN;
-	cmd.cmd.num_channels = 0;
+	cmd->scan_type = WMI_ACTIVE_SCAN;
+	cmd->num_channels = 0;
 	n = min(request->n_channels, 4U);
 	for (i = 0; i < n; i++) {
 		int ch = request->channels[i]->hw_value;
@@ -991,7 +988,8 @@ static int wil_cfg80211_scan(struct wiphy *wiphy,
 			continue;
 		}
 		/* 0-based channel indexes */
-		cmd.cmd.channel_list[cmd.cmd.num_channels++].channel = ch - 1;
+		cmd->num_channels++;
+		cmd->channel_list[cmd->num_channels - 1].channel = ch - 1;
 		wil_dbg_misc(wil, "Scan for ch %d  : %d MHz\n", ch,
 			     request->channels[i]->center_freq);
 	}
@@ -1007,16 +1005,15 @@ static int wil_cfg80211_scan(struct wiphy *wiphy,
 	if (rc)
 		goto out_restore;
 
-	if (wil->discovery_mode && cmd.cmd.scan_type == WMI_ACTIVE_SCAN) {
-		cmd.cmd.discovery_mode = 1;
+	if (wil->discovery_mode && cmd->scan_type == WMI_ACTIVE_SCAN) {
+		cmd->discovery_mode = 1;
 		wil_dbg_misc(wil, "active scan with discovery_mode=1\n");
 	}
 
 	if (vif->mid == 0)
 		wil->radio_wdev = wdev;
 	rc = wmi_send(wil, WMI_START_SCAN_CMDID, vif->mid,
-		      &cmd, sizeof(cmd.cmd) +
-		      cmd.cmd.num_channels * sizeof(cmd.cmd.channel_list[0]));
+		      cmd, struct_size(cmd, channel_list, cmd->num_channels));
 
 out_restore:
 	if (rc) {
@@ -2735,7 +2732,7 @@ int wil_cfg80211_iface_combinations_from_fw(
 		return 0;
 	}
 
-	combo = conc->combos;
+	combo = (const struct wil_fw_concurrency_combo *)(conc + 1);
 	n_combos = le16_to_cpu(conc->n_combos);
 	for (i = 0; i < n_combos; i++) {
 		total_limits += combo->n_limits;
@@ -2751,7 +2748,7 @@ int wil_cfg80211_iface_combinations_from_fw(
 		return -ENOMEM;
 	iface_limit = (struct ieee80211_iface_limit *)(iface_combinations +
 						       n_combos);
-	combo = conc->combos;
+	combo = (const struct wil_fw_concurrency_combo *)(conc + 1);
 	for (i = 0; i < n_combos; i++) {
 		iface_combinations[i].max_interfaces = combo->max_interfaces;
 		iface_combinations[i].num_different_channels =
diff --git a/drivers/net/wireless/ath/wil6210/fw.h b/drivers/net/wireless/ath/wil6210/fw.h
index aa1620e0d2..2079a90ec2 100644
--- a/drivers/net/wireless/ath/wil6210/fw.h
+++ b/drivers/net/wireless/ath/wil6210/fw.h
@@ -93,7 +93,6 @@ struct wil_fw_record_concurrency { /* type == wil_fw_type_comment */
 	/* number of concurrency combinations that follow */
 	__le16 n_combos;
 	/* keep last - combinations, variable size by n_combos */
-	struct wil_fw_concurrency_combo combos[];
 } __packed;
 
 /* brd file info encoded inside a comment record */
diff --git a/drivers/net/wireless/ath/wil6210/fw_inc.c b/drivers/net/wireless/ath/wil6210/fw_inc.c
index fbc84c0340..c3c0b289dc 100644
--- a/drivers/net/wireless/ath/wil6210/fw_inc.c
+++ b/drivers/net/wireless/ath/wil6210/fw_inc.c
@@ -212,8 +212,8 @@ fw_handle_concurrency(struct wil6210_priv *wil, const void *data,
 	}
 
 	n_combos = le16_to_cpu(rec->n_combos);
-	remain = size - offsetof(struct wil_fw_record_concurrency, combos);
-	combo = rec->combos;
+	remain = size - sizeof(struct wil_fw_record_concurrency);
+	combo = (const struct wil_fw_concurrency_combo *)(rec + 1);
 	for (i = 0; i < n_combos; i++) {
 		if (remain < sizeof(*combo))
 			goto out_short;
diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index 6fdb77d4c5..8ff69dc72f 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -4015,27 +4015,22 @@ int wmi_set_cqm_rssi_config(struct wil6210_priv *wil,
 	struct wil6210_vif *vif = ndev_to_vif(ndev);
 	int rc;
 	struct {
-		struct wmi_set_link_monitor_cmd cmd;
-		s8 rssi_thold;
-	} __packed cmd = {
-		.cmd = {
-			.rssi_hyst = rssi_hyst,
-			.rssi_thresholds_list_size = 1,
-		},
-		.rssi_thold = rssi_thold,
-	};
-	struct {
 		struct wmi_cmd_hdr hdr;
 		struct wmi_set_link_monitor_event evt;
 	} __packed reply = {
 		.evt = {.status = WMI_FW_STATUS_FAILURE},
 	};
+	DEFINE_FLEX(struct wmi_set_link_monitor_cmd, cmd,
+		    rssi_thresholds_list, rssi_thresholds_list_size, 1);
+
+	cmd->rssi_hyst = rssi_hyst;
+	cmd->rssi_thresholds_list[0] = rssi_thold;
 
 	if (rssi_thold > S8_MAX || rssi_thold < S8_MIN || rssi_hyst > U8_MAX)
 		return -EINVAL;
 
-	rc = wmi_call(wil, WMI_SET_LINK_MONITOR_CMDID, vif->mid, &cmd,
-		      sizeof(cmd), WMI_SET_LINK_MONITOR_EVENTID,
+	rc = wmi_call(wil, WMI_SET_LINK_MONITOR_CMDID, vif->mid, cmd,
+		      __struct_size(cmd), WMI_SET_LINK_MONITOR_EVENTID,
 		      &reply, sizeof(reply), WIL_WMI_CALL_GENERAL_TO_MS);
 	if (rc) {
 		wil_err(wil, "WMI_SET_LINK_MONITOR_CMDID failed, rc %d\n", rc);
diff --git a/drivers/net/wireless/ath/wil6210/wmi.h b/drivers/net/wireless/ath/wil6210/wmi.h
index 71bf2ae27a..38f6452401 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.h
+++ b/drivers/net/wireless/ath/wil6210/wmi.h
@@ -474,7 +474,7 @@ struct wmi_start_scan_cmd {
 	struct {
 		u8 channel;
 		u8 reserved;
-	} channel_list[];
+	} channel_list[] __counted_by(num_channels);
 } __packed;
 
 #define WMI_MAX_PNO_SSID_NUM	(16)
@@ -3320,7 +3320,7 @@ struct wmi_set_link_monitor_cmd {
 	u8 rssi_hyst;
 	u8 reserved[12];
 	u8 rssi_thresholds_list_size;
-	s8 rssi_thresholds_list[];
+	s8 rssi_thresholds_list[] __counted_by(rssi_thresholds_list_size);
 } __packed;
 
 /* wmi_link_monitor_event_type */