cfg80211: Remove unused cfg80211_can_use_iftype_chan()

Last caller of this function was removed in 3.17 in commit
97dc94f1d933c9df2c0b327066ea130c0e92083f.

Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 0 insertions, 121 deletions

diff --git a/net/wireless/core.h b/net/wireless/core.h
index a618b4b86fa4..022ccad06cbe 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -416,13 +416,6 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
 
-int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
-                                 struct wireless_dev *wdev,
-                                 enum nl80211_iftype iftype,
-                                 struct ieee80211_channel *chan,
-                                 enum cfg80211_chan_mode chanmode,
-                                 u8 radar_detect);
-
 /**
  * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
  * @wiphy: the wiphy to validate against
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 010a3c75a677..92770427b211 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1613,120 +1613,6 @@ int cfg80211_check_combinations(struct wiphy *wiphy,
 }
 EXPORT_SYMBOL(cfg80211_check_combinations);
 
-int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
-                                 struct wireless_dev *wdev,
-                                 enum nl80211_iftype iftype,
-                                 struct ieee80211_channel *chan,
-                                 enum cfg80211_chan_mode chanmode,
-                                 u8 radar_detect)
-{
-        struct wireless_dev *wdev_iter;
-        int num[NUM_NL80211_IFTYPES];
-        struct ieee80211_channel
-                        *used_channels[CFG80211_MAX_NUM_DIFFERENT_CHANNELS];
-        struct ieee80211_channel *ch;
-        enum cfg80211_chan_mode chmode;
-        int num_different_channels = 0;
-        int total = 1;
-        int i;
-
-        ASSERT_RTNL();
-
-        if (WARN_ON(hweight32(radar_detect) > 1))
-                return -EINVAL;
-
-        if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
-                return -EINVAL;
-
-        /* Always allow software iftypes */
-        if (rdev->wiphy.software_iftypes & BIT(iftype)) {
-                if (radar_detect)
-                        return -EINVAL;
-                return 0;
-        }
-
-        memset(num, 0, sizeof(num));
-        memset(used_channels, 0, sizeof(used_channels));
-
-        num[iftype] = 1;
-
-        /* TODO: We'll probably not need this anymore, since this
-         * should only be called with CHAN_MODE_UNDEFINED. There are
-         * still a couple of pending calls where other chanmodes are
-         * used, but we should get rid of them.
-         */
-        switch (chanmode) {
-        case CHAN_MODE_UNDEFINED:
-                break;
-        case CHAN_MODE_SHARED:
-                WARN_ON(!chan);
-                used_channels[0] = chan;
-                num_different_channels++;
-                break;
-        case CHAN_MODE_EXCLUSIVE:
-                num_different_channels++;
-                break;
-        }
-
-        list_for_each_entry(wdev_iter, &rdev->wdev_list, list) {
-                if (wdev_iter == wdev)
-                        continue;
-                if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) {
-                        if (!wdev_iter->p2p_started)
-                                continue;
-                } else if (wdev_iter->netdev) {
-                        if (!netif_running(wdev_iter->netdev))
-                                continue;
-                } else {
-                        WARN_ON(1);
-                }
-
-                if (rdev->wiphy.software_iftypes & BIT(wdev_iter->iftype))
-                        continue;
-
-                /*
-                 * We may be holding the "wdev" mutex, but now need to lock
-                 * wdev_iter. This is OK because once we get here wdev_iter
-                 * is not wdev (tested above), but we need to use the nested
-                 * locking for lockdep.
-                 */
-                mutex_lock_nested(&wdev_iter->mtx, 1);
-                __acquire(wdev_iter->mtx);
-                cfg80211_get_chan_state(wdev_iter, &ch, &chmode, &radar_detect);
-                wdev_unlock(wdev_iter);
-
-                switch (chmode) {
-                case CHAN_MODE_UNDEFINED:
-                        break;
-                case CHAN_MODE_SHARED:
-                        for (i = 0; i < CFG80211_MAX_NUM_DIFFERENT_CHANNELS; i++)
-                                if (!used_channels[i] || used_channels[i] == ch)
-                                        break;
-
-                        if (i == CFG80211_MAX_NUM_DIFFERENT_CHANNELS)
-                                return -EBUSY;
-
-                        if (used_channels[i] == NULL) {
-                                used_channels[i] = ch;
-                                num_different_channels++;
-                        }
-                        break;
-                case CHAN_MODE_EXCLUSIVE:
-                        num_different_channels++;
-                        break;
-                }
-
-                num[wdev_iter->iftype]++;
-                total++;
-        }
-
-        if (total == 1 && !radar_detect)
-                return 0;
-
-        return cfg80211_check_combinations(&rdev->wiphy, num_different_channels,
-                                           radar_detect, num);
-}
-
 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
                            const u8 *rates, unsigned int n_rates,
                            u32 *mask)