android_kernel_xiaomi_sm8350/net/mac80211/pm.c
Bob Copeland e874e65855 mac80211: flush workqueue a second time in suspend()
Drivers can theoretically queue more work in one of their callbacks
from mac80211 suspend, so let's flush it once more to be on the safe
side, just before calling ->stop().

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29 16:01:42 -05:00

118 lines
2.8 KiB
C

#include <net/mac80211.h>
#include <net/rtnetlink.h>
#include "ieee80211_i.h"
#include "led.h"
int __ieee80211_suspend(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_init_conf conf;
struct sta_info *sta;
flush_workqueue(local->hw.workqueue);
/* disable keys */
list_for_each_entry(sdata, &local->interfaces, list)
ieee80211_disable_keys(sdata);
/* remove STAs */
list_for_each_entry(sta, &local->sta_list, list) {
if (local->ops->sta_notify) {
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
sdata = container_of(sdata->bss,
struct ieee80211_sub_if_data,
u.ap);
local->ops->sta_notify(hw, &sdata->vif,
STA_NOTIFY_REMOVE, &sta->sta);
}
}
/* remove all interfaces */
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
sdata->vif.type != NL80211_IFTYPE_MONITOR &&
netif_running(sdata->dev)) {
conf.vif = &sdata->vif;
conf.type = sdata->vif.type;
conf.mac_addr = sdata->dev->dev_addr;
local->ops->remove_interface(hw, &conf);
}
}
/* flush again, in case driver queued work */
flush_workqueue(local->hw.workqueue);
/* stop hardware */
if (local->open_count) {
ieee80211_led_radio(local, false);
local->ops->stop(hw);
}
return 0;
}
int __ieee80211_resume(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_init_conf conf;
struct sta_info *sta;
int res;
/* restart hardware */
if (local->open_count) {
res = local->ops->start(hw);
ieee80211_led_radio(local, hw->conf.radio_enabled);
}
/* add interfaces */
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
sdata->vif.type != NL80211_IFTYPE_MONITOR &&
netif_running(sdata->dev)) {
conf.vif = &sdata->vif;
conf.type = sdata->vif.type;
conf.mac_addr = sdata->dev->dev_addr;
res = local->ops->add_interface(hw, &conf);
}
}
/* add STAs back */
list_for_each_entry(sta, &local->sta_list, list) {
if (local->ops->sta_notify) {
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
sdata = container_of(sdata->bss,
struct ieee80211_sub_if_data,
u.ap);
local->ops->sta_notify(hw, &sdata->vif,
STA_NOTIFY_ADD, &sta->sta);
}
}
/* add back keys */
list_for_each_entry(sdata, &local->interfaces, list)
if (netif_running(sdata->dev))
ieee80211_enable_keys(sdata);
/* setup RTS threshold */
if (local->ops->set_rts_threshold)
local->ops->set_rts_threshold(hw, local->rts_threshold);
/* reconfigure hardware */
ieee80211_hw_config(local, ~0);
netif_addr_lock_bh(local->mdev);
ieee80211_configure_filter(local);
netif_addr_unlock_bh(local->mdev);
return 0;
}