brcmfmac: no interface combination check for single interface

The interface combinations are intended for use-case in which the driver
handles multiple interface concurrently. This means that the combinations
do not need to be checked when there is only a single interface active.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index 8557566..3ac5cf7 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -396,15 +396,23 @@ static int brcmf_vif_change_validate(struct brcmf_cfg80211_info *cfg,
 {
        int iftype_num[NUM_NL80211_IFTYPES];
        struct brcmf_cfg80211_vif *pos;
+       bool check_combos = false;
+       int ret = 0;
 
        memset(&iftype_num[0], 0, sizeof(iftype_num));
        list_for_each_entry(pos, &cfg->vif_list, list)
-               if (pos == vif)
+               if (pos == vif) {
                        iftype_num[new_type]++;
-               else
+               } else {
+                       /* concurrent interfaces so need check combinations */
+                       check_combos = true;
                        iftype_num[pos->wdev.iftype]++;
+               }
 
-       return cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
+       if (check_combos)
+               ret = cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
+
+       return ret;
 }
 
 static int brcmf_vif_add_validate(struct brcmf_cfg80211_info *cfg,