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Commit 69fecf59 authored by Lior David's avatar Lior David Committed by Kalle Valo
Browse files

wil6210: ensure P2P device is stopped before removing interface 



User space can remove the P2P management interface while it is active
(for example, while listen/search is active) and this can cause
a crash. Ensure the P2P device is fully stopped before removing.

Signed-off-by: default avatarLior David <qca_liord@qca.qualcomm.com>
Signed-off-by: default avatarMaya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent d83ad4c4

drivers/net/wireless/ath/wil6210/cfg80211.c

+29 −28
Original line number Diff line number Diff line
@@ -382,6 +382,34 @@ static int wil_cfg80211_dump_station(struct wiphy *wiphy, 
	return rc;

}



static int wil_cfg80211_start_p2p_device(struct wiphy *wiphy,

					 struct wireless_dev *wdev)

{

	struct wil6210_priv *wil = wiphy_to_wil(wiphy);



	wil_dbg_misc(wil, "start_p2p_device: entered\n");

	wil->p2p.p2p_dev_started = 1;

	return 0;

}



static void wil_cfg80211_stop_p2p_device(struct wiphy *wiphy,

					 struct wireless_dev *wdev)

{

	struct wil6210_priv *wil = wiphy_to_wil(wiphy);

	struct wil_p2p_info *p2p = &wil->p2p;



	if (!p2p->p2p_dev_started)

		return;



	wil_dbg_misc(wil, "stop_p2p_device: entered\n");

	mutex_lock(&wil->mutex);

	mutex_lock(&wil->p2p_wdev_mutex);

	wil_p2p_stop_radio_operations(wil);

	p2p->p2p_dev_started = 0;

	mutex_unlock(&wil->p2p_wdev_mutex);

	mutex_unlock(&wil->mutex);

}



static struct wireless_dev *

wil_cfg80211_add_iface(struct wiphy *wiphy, const char *name,

		       unsigned char name_assign_type,
@@ -430,6 +458,7 @@ static int wil_cfg80211_del_iface(struct wiphy *wiphy, 
		return -EINVAL;

	}



	wil_cfg80211_stop_p2p_device(wiphy, wdev);

	wil_p2p_wdev_free(wil);



	return 0;
@@ -1661,34 +1690,6 @@ static int wil_cfg80211_change_bss(struct wiphy *wiphy, 
	return 0;

}



static int wil_cfg80211_start_p2p_device(struct wiphy *wiphy,

					 struct wireless_dev *wdev)

{

	struct wil6210_priv *wil = wiphy_to_wil(wiphy);



	wil_dbg_misc(wil, "start_p2p_device: entered\n");

	wil->p2p.p2p_dev_started = 1;

	return 0;

}



static void wil_cfg80211_stop_p2p_device(struct wiphy *wiphy,

					 struct wireless_dev *wdev)

{

	struct wil6210_priv *wil = wiphy_to_wil(wiphy);

	struct wil_p2p_info *p2p = &wil->p2p;



	if (!p2p->p2p_dev_started)

		return;



	wil_dbg_misc(wil, "stop_p2p_device: entered\n");

	mutex_lock(&wil->mutex);

	mutex_lock(&wil->p2p_wdev_mutex);

	wil_p2p_stop_radio_operations(wil);

	p2p->p2p_dev_started = 0;

	mutex_unlock(&wil->p2p_wdev_mutex);

	mutex_unlock(&wil->mutex);

}



static int wil_cfg80211_set_power_mgmt(struct wiphy *wiphy,

				       struct net_device *dev,

				       bool enabled, int timeout)