From: Johannes Berg Date: Tue, 7 Jul 2009 01:56:09 +0000 (+0200) Subject: cfg80211: properly name driver locking X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4d0c8aead32ecdbe1310ad473b3637991f560865;p=linux-beck.git cfg80211: properly name driver locking Currently we call that cfg80211_put_dev(), but that is misleading. With the new convention of using 'rdev' for registered_device variables, also call that function cfg80211_unlock_rdev(). Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- diff --git a/net/wireless/core.c b/net/wireless/core.c index 83ec7197bd7c..c6813beded06 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -171,12 +171,6 @@ cfg80211_get_dev_from_ifindex(int ifindex) return drv; } -void cfg80211_put_dev(struct cfg80211_registered_device *drv) -{ - BUG_ON(IS_ERR(drv)); - mutex_unlock(&drv->mtx); -} - /* requires cfg80211_mutex to be held */ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, char *newname) diff --git a/net/wireless/core.h b/net/wireless/core.h index 4554453c116a..92da612b3f9e 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -146,7 +146,7 @@ __cfg80211_drv_from_info(struct genl_info *info); * If successful, it returns non-NULL and also locks * the driver's mutex! * - * This means that you need to call cfg80211_put_dev() + * This means that you need to call cfg80211_unlock_rdev() * before being allowed to acquire &cfg80211_mutex! * * This is necessary because we need to lock the global @@ -170,7 +170,11 @@ struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); extern struct cfg80211_registered_device * cfg80211_get_dev_from_ifindex(int ifindex); -extern void cfg80211_put_dev(struct cfg80211_registered_device *drv); +static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *drv) +{ + BUG_ON(IS_ERR(drv) || !drv); + mutex_unlock(&drv->mtx); +} /* free object */ extern void cfg80211_dev_free(struct cfg80211_registered_device *drv); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 44c520c264fc..df22048419e3 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -411,14 +411,14 @@ static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) goto out_free; - cfg80211_put_dev(dev); + cfg80211_unlock_rdev(dev); return genlmsg_unicast(msg, info->snd_pid); out_free: nlmsg_free(msg); out_err: - cfg80211_put_dev(dev); + cfg80211_unlock_rdev(dev); return -ENOBUFS; } @@ -737,7 +737,7 @@ static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) goto out_free; dev_put(netdev); - cfg80211_put_dev(dev); + cfg80211_unlock_rdev(dev); return genlmsg_unicast(msg, info->snd_pid); @@ -745,7 +745,7 @@ static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) nlmsg_free(msg); out_err: dev_put(netdev); - cfg80211_put_dev(dev); + cfg80211_unlock_rdev(dev); return -ENOBUFS; } @@ -853,7 +853,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) unlock: dev_put(dev); - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); unlock_rtnl: rtnl_unlock(); return err; @@ -906,7 +906,7 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) type, err ? NULL : &flags, ¶ms); unlock: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); unlock_rtnl: rtnl_unlock(); return err; @@ -934,7 +934,7 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); unlock_rtnl: rtnl_unlock(); return err; @@ -1037,7 +1037,7 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) err = -ENOBUFS; nlmsg_free(msg); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -1097,7 +1097,7 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) #endif out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: @@ -1163,7 +1163,7 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -1211,7 +1211,7 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) #endif out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: @@ -1306,7 +1306,7 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) err = call(&drv->wiphy, dev, ¶ms); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -1338,7 +1338,7 @@ static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) err = drv->ops->del_beacon(&drv->wiphy, dev); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -1572,7 +1572,7 @@ static int nl80211_dump_station(struct sk_buff *skb, cb->args[1] = sta_idx; err = skb->len; out_err: - cfg80211_put_dev(dev); + cfg80211_unlock_rdev(dev); out_rtnl: rtnl_unlock(); @@ -1624,7 +1624,7 @@ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) out_free: nlmsg_free(msg); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -1760,7 +1760,7 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) out: if (params.vlan) dev_put(params.vlan); - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -1865,7 +1865,7 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) out: if (params.vlan) dev_put(params.vlan); - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -1904,7 +1904,7 @@ static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -2035,7 +2035,7 @@ static int nl80211_dump_mpath(struct sk_buff *skb, cb->args[1] = path_idx; err = skb->len; out_err: - cfg80211_put_dev(dev); + cfg80211_unlock_rdev(dev); out_rtnl: rtnl_unlock(); @@ -2093,7 +2093,7 @@ static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) out_free: nlmsg_free(msg); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -2142,7 +2142,7 @@ static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -2190,7 +2190,7 @@ static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -2222,7 +2222,7 @@ static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) err = drv->ops->del_mpath(&drv->wiphy, dev, dst); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -2278,7 +2278,7 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -2444,7 +2444,7 @@ static int nl80211_get_mesh_params(struct sk_buff *skb, err = -EMSGSIZE; out: /* Cleanup */ - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -2550,7 +2550,7 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info) out: /* cleanup */ - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -2890,7 +2890,7 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) kfree(request); } out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); out_rtnl: rtnl_unlock(); @@ -3007,7 +3007,7 @@ static int nl80211_dump_scan(struct sk_buff *skb, cb->args[1] = idx; err = skb->len; - cfg80211_put_dev(dev); + cfg80211_unlock_rdev(dev); out_put_netdev: dev_put(netdev); @@ -3112,7 +3112,7 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) ssid, ssid_len, ie, ie_len); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -3259,7 +3259,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) &crypto); out: - cfg80211_put_dev(rdev); + cfg80211_unlock_rdev(rdev); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -3321,7 +3321,7 @@ static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) err = cfg80211_mlme_deauth(drv, dev, bssid, ie, ie_len, reason_code); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -3383,7 +3383,7 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) err = cfg80211_mlme_disassoc(drv, dev, bssid, ie, ie_len, reason_code); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -3464,7 +3464,7 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) err = cfg80211_join_ibss(drv, dev, &ibss); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -3501,7 +3501,7 @@ static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) err = cfg80211_leave_ibss(drv, dev, false); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -3538,7 +3538,7 @@ static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) rdev->testmode_info = NULL; } - cfg80211_put_dev(rdev); + cfg80211_unlock_rdev(rdev); unlock_rtnl: rtnl_unlock(); @@ -3707,7 +3707,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) err = cfg80211_connect(drv, dev, &connect); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); @@ -3748,7 +3748,7 @@ static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) err = cfg80211_disconnect(drv, dev, reason, true); out: - cfg80211_put_dev(drv); + cfg80211_unlock_rdev(drv); dev_put(dev); unlock_rtnl: rtnl_unlock(); diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 925399462a79..1625faf1de57 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -28,8 +28,6 @@ void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted) if (!dev) goto out; - WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req); - /* * This must be before sending the other events! * Otherwise, wpa_supplicant gets completely confused with @@ -636,7 +634,7 @@ int cfg80211_wext_siwscan(struct net_device *dev, } else nl80211_send_scan_start(rdev, dev); out: - cfg80211_put_dev(rdev); + cfg80211_unlock_rdev(rdev); return err; } EXPORT_SYMBOL_GPL(cfg80211_wext_siwscan); @@ -945,7 +943,7 @@ int cfg80211_wext_giwscan(struct net_device *dev, } out: - cfg80211_put_dev(rdev); + cfg80211_unlock_rdev(rdev); return res; } EXPORT_SYMBOL_GPL(cfg80211_wext_giwscan);