Firmware sends supported interface type rather than mask. As a result,
types field of ieee80211_iface_limit structure may end up having
multiple iftype bits set. This leads to WARN_ON from
wiphy_verify_combinations.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko...@quantenna.com>
Signed-off-by: Sergey Matyukevich <sergey.matyukevich...@quantenna.com>
Signed-off-by: Avinash Patil <avina...@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/commands.c  |  9 +++++----
 drivers/net/wireless/quantenna/qtnfmac/qlink.h     |  2 +-
 .../net/wireless/quantenna/qtnfmac/qlink_util.c    | 23 ++++++++++++----------
 .../net/wireless/quantenna/qtnfmac/qlink_util.h    |  2 +-
 4 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c 
b/drivers/net/wireless/quantenna/qtnfmac/commands.c
index 524269d2c30c..94656106b496 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
@@ -989,7 +989,7 @@ static int qtnf_parse_variable_mac_info(struct qtnf_wmac 
*mac,
        struct ieee80211_iface_limit *limits = NULL;
        const struct qlink_iface_limit *limit_record;
        size_t record_count = 0, rec = 0;
-       u16 tlv_type, tlv_value_len, mask;
+       u16 tlv_type, tlv_value_len;
        struct qlink_iface_comb_num *comb;
        size_t tlv_full_len;
        const struct qlink_tlv_hdr *tlv;
@@ -1042,9 +1042,10 @@ static int qtnf_parse_variable_mac_info(struct qtnf_wmac 
*mac,
 
                        limit_record = (void *)tlv->val;
                        limits[rec].max = le16_to_cpu(limit_record->max_num);
-                       mask = le16_to_cpu(limit_record->type_mask);
-                       limits[rec].types = qlink_iface_type_mask_to_nl(mask);
-                       /* only AP and STA modes are supported */
+                       limits[rec].types = qlink_iface_type_to_nl_mask(
+                               le16_to_cpu(limit_record->type));
+
+                       /* supported modes: STA, AP */
                        limits[rec].types &= BIT(NL80211_IFTYPE_AP) |
                                             BIT(NL80211_IFTYPE_STATION);
 
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink.h 
b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
index c529cc1994b4..ec5126362494 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
@@ -873,7 +873,7 @@ struct qlink_tlv_hdr {
 
 struct qlink_iface_limit {
        __le16 max_num;
-       __le16 type_mask;
+       __le16 type;
 } __packed;
 
 struct qlink_iface_comb_num {
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c 
b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
index 49ae652ad9a3..22fa631d692d 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
@@ -17,24 +17,27 @@
 
 #include "qlink_util.h"
 
-u16 qlink_iface_type_mask_to_nl(u16 qlink_mask)
+u16 qlink_iface_type_to_nl_mask(u16 qlink_type)
 {
        u16 result = 0;
 
-       if (qlink_mask & QLINK_IFTYPE_AP)
+       switch (qlink_type) {
+       case QLINK_IFTYPE_AP:
                result |= BIT(NL80211_IFTYPE_AP);
-
-       if (qlink_mask & QLINK_IFTYPE_STATION)
+               break;
+       case QLINK_IFTYPE_STATION:
                result |= BIT(NL80211_IFTYPE_STATION);
-
-       if (qlink_mask & QLINK_IFTYPE_ADHOC)
+               break;
+       case QLINK_IFTYPE_ADHOC:
                result |= BIT(NL80211_IFTYPE_ADHOC);
-
-       if (qlink_mask & QLINK_IFTYPE_MONITOR)
+               break;
+       case QLINK_IFTYPE_MONITOR:
                result |= BIT(NL80211_IFTYPE_MONITOR);
-
-       if (qlink_mask & QLINK_IFTYPE_WDS)
+               break;
+       case QLINK_IFTYPE_WDS:
                result |= BIT(NL80211_IFTYPE_WDS);
+               break;
+       }
 
        return result;
 }
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h 
b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h
index 90d7d09a6c63..c9e882a3a991 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h
@@ -68,7 +68,7 @@ static inline void qtnf_cmd_skb_put_tlv_u16(struct sk_buff 
*skb,
        memcpy(hdr->val, &tmp, sizeof(tmp));
 }
 
-u16 qlink_iface_type_mask_to_nl(u16 qlink_mask);
+u16 qlink_iface_type_to_nl_mask(u16 qlink_type);
 u8 qlink_chan_width_mask_to_nl(u16 qlink_mask);
 
 #endif /* _QTN_FMAC_QLINK_UTIL_H_ */
-- 
2.11.0

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