From: Hans de Goede <hdegoede@xxxxxxxxxx>
[ Upstream commit 3f467036093fedd7e231924327455fc609b5ef02 ]
Commit cc7ad0d77b51 ("drivers: staging: rtl8723bs: Fix deadlock in
rtw_surveydone_event_callback()") besides fixing the deadlock also
modified rtw_scan_timeout_handler() to use spin_[un]lock_irq()
instead of spin_[un]lock_bh().
Disabling the IRQs is not necessary since all code taking this lock
runs from either user contexts or from softirqs
rtw_scan_timeout_handler() is the only function taking pmlmepriv->lock
which uses spin_[un]lock_irq() for this. Switch back to
spin_[un]lock_bh() to make it consistent with the rest of the code.
Fixes: cc7ad0d77b51 ("drivers: staging: rtl8723bs: Fix deadlock in rtw_surveydone_event_callback()")
Cc: Duoming Zhou <duoming@xxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230221145326.7808-2-hdegoede@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/staging/rtl8723bs/core/rtw_mlme.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme.c b/drivers/staging/rtl8723bs/core/rtw_mlme.c
index f85ef7dd61b24..5b64980e8522f 100644
--- a/drivers/staging/rtl8723bs/core/rtw_mlme.c
+++ b/drivers/staging/rtl8723bs/core/rtw_mlme.c
@@ -1588,11 +1588,11 @@ void rtw_scan_timeout_handler(struct timer_list *t)
mlmepriv.scan_to_timer);
struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
- spin_lock_irq(&pmlmepriv->lock);
+ spin_lock_bh(&pmlmepriv->lock);
_clr_fwstate_(pmlmepriv, _FW_UNDER_SURVEY);
- spin_unlock_irq(&pmlmepriv->lock);
+ spin_unlock_bh(&pmlmepriv->lock);
rtw_indicate_scan_done(adapter, true);
}
--
2.39.2
