From a809ca5e03c6dd3b324d148564715ca5ea2b8103 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 9 Jan 2015 11:29:50 +0100 Subject: [PATCH] mac80211_hwsim: fix PS debugfs file locking The functions called within the iterators must be called with tasklets disabled, so use atomic iteration like the rest of the code and disable tasklets around the whole operation. Signed-off-by: Johannes Berg --- drivers/net/wireless/mac80211_hwsim.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 057a99e01637..74f4e1c18322 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -626,22 +626,22 @@ static int hwsim_fops_ps_write(void *dat, u64 val) old_ps = data->ps; data->ps = val; + local_bh_disable(); if (val == PS_MANUAL_POLL) { - ieee80211_iterate_active_interfaces(data->hw, - IEEE80211_IFACE_ITER_NORMAL, - hwsim_send_ps_poll, data); + ieee80211_iterate_active_interfaces_atomic( + data->hw, IEEE80211_IFACE_ITER_NORMAL, + hwsim_send_ps_poll, data); data->ps_poll_pending = true; } else if (old_ps == PS_DISABLED && val != PS_DISABLED) { - ieee80211_iterate_active_interfaces(data->hw, - IEEE80211_IFACE_ITER_NORMAL, - hwsim_send_nullfunc_ps, - data); + ieee80211_iterate_active_interfaces_atomic( + data->hw, IEEE80211_IFACE_ITER_NORMAL, + hwsim_send_nullfunc_ps, data); } else if (old_ps != PS_DISABLED && val == PS_DISABLED) { - ieee80211_iterate_active_interfaces(data->hw, - IEEE80211_IFACE_ITER_NORMAL, - hwsim_send_nullfunc_no_ps, - data); + ieee80211_iterate_active_interfaces_atomic( + data->hw, IEEE80211_IFACE_ITER_NORMAL, + hwsim_send_nullfunc_no_ps, data); } + local_bh_enable(); return 0; } -- 2.11.0