[PATCH V3 7/9] qtnfmac: do not cache CSA chandef info

[igor . mitsyanko . os]

From: Igor Mitsyanko <igor.mitsyanko...@quantenna.com>

It is never used for anything useful, and all logic is handled by
either WiFi card or higher layers.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko...@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 12 ------------
 drivers/net/wireless/quantenna/qtnfmac/commands.c |  2 --
 drivers/net/wireless/quantenna/qtnfmac/core.h     |  1 -
 drivers/net/wireless/quantenna/qtnfmac/event.c    |  8 +-------
 4 files changed, 1 insertion(+), 22 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c 
b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 30f8be5..262e8cf 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -809,7 +809,6 @@ qtnf_get_channel(struct wiphy *wiphy, struct wireless_dev 
*wdev,
 static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
                               struct cfg80211_csa_settings *params)
 {
-       struct qtnf_wmac *mac = wiphy_priv(wiphy);
        struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
        int ret;
 
@@ -830,17 +829,6 @@ static int qtnf_channel_switch(struct wiphy *wiphy, struct 
net_device *dev,
                return -EOPNOTSUPP;
        }
 
-       if (vif->vifid != 0) {
-               if (!(mac->status & QTNF_MAC_CSA_ACTIVE))
-                       return -EOPNOTSUPP;
-
-               if (!cfg80211_chandef_identical(&params->chandef,
-                                               &mac->csa_chandef))
-                       return -EINVAL;
-
-               return 0;
-       }
-
        if (!cfg80211_chandef_valid(&params->chandef)) {
                pr_err("%s: invalid channel\n", dev->name);
                return -EINVAL;
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c 
b/drivers/net/wireless/quantenna/qtnfmac/commands.c
index 0138dad..42f7e1d 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
@@ -2337,8 +2337,6 @@ int qtnf_cmd_send_chan_switch(struct qtnf_vif *vif,
 
        switch (res_code) {
        case QLINK_CMD_RESULT_OK:
-               memcpy(&mac->csa_chandef, &params->chandef,
-                      sizeof(mac->csa_chandef));
                mac->status |= QTNF_MAC_CSA_ACTIVE;
                ret = 0;
                break;
diff --git a/drivers/net/wireless/quantenna/qtnfmac/core.h 
b/drivers/net/wireless/quantenna/qtnfmac/core.h
index 066fcd1..521ce09 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/core.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/core.h
@@ -147,7 +147,6 @@ struct qtnf_wmac {
        struct qtnf_vif iflist[QTNF_MAX_INTF];
        struct cfg80211_scan_request *scan_req;
        struct cfg80211_chan_def chandef;
-       struct cfg80211_chan_def csa_chandef;
        struct mutex mac_lock;  /* lock during wmac speicific ops */
        struct timer_list scan_timeout;
 };
diff --git a/drivers/net/wireless/quantenna/qtnfmac/event.c 
b/drivers/net/wireless/quantenna/qtnfmac/event.c
index df58e83..77563b0 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/event.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/event.c
@@ -381,13 +381,7 @@ qtnf_event_handle_freq_change(struct qtnf_wmac *mac,
                 mac->macid, chandef.chan->hw_value, chandef.center_freq1,
                 chandef.center_freq2, chandef.width);
 
-       if (mac->status & QTNF_MAC_CSA_ACTIVE) {
-               mac->status &= ~QTNF_MAC_CSA_ACTIVE;
-               if (chandef.chan->hw_value != mac->csa_chandef.chan->hw_value)
-                       pr_warn("unexpected switch to %u during CSA to %u\n",
-                               chandef.chan->hw_value,
-                               mac->csa_chandef.chan->hw_value);
-       }
+       mac->status &= ~QTNF_MAC_CSA_ACTIVE;
 
        memcpy(&mac->chandef, &chandef, sizeof(mac->chandef));
 
-- 
2.9.5