[PATCH v2 1/1] wifi: libertas: add wake_up() call to properly notify fw_wq during disconnect

[Jakov Novak <jakovnovak30@gmail.com>]

This is necessary because the thread would be stuck if the
firmware is not fully loaded before the if_usb_disconnect function is
called. In that case if_usb_prog_firmware would be stuck in
wait_event_interruptible and lbs_remove_card would also be stuck waiting
for firmware loading to be done which was the original bug reported.

Fixes: 954ee164f4f4 ("[PATCH] libertas: reorganize and simplify init sequence")
Reported-and-tested-by: syzbot+c99d17aa44dbdba16ad2@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=c99d17aa44dbdba16ad2
Signed-off-by: Jakov Novak <jakovnovak30@gmail.com>
---
 drivers/net/wireless/marvell/libertas/if_usb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/libertas/if_usb.c b/drivers/net/wireless/marvell/libertas/if_usb.c
index 245c902a7e42..8a6bf1365cfa 100644
--- a/drivers/net/wireless/marvell/libertas/if_usb.c
+++ b/drivers/net/wireless/marvell/libertas/if_usb.c
@@ -310,7 +310,6 @@ static void if_usb_disconnect(struct usb_interface *intf)
 	struct lbs_private *priv = cardp->priv;
 
 	cardp->surprise_removed = 1;
+	wake_up(&cardp->fw_wq);
 
 	if (priv) {
 		lbs_stop_card(priv);
-- 
2.53.0