linux-kernel - [PATCH 3.12 85/88] HID: elo: kill not flush the work

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Date:	Thu, 14 Jul 2016 10:16:17 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Oliver Neukum <oneukum@...e.com>,
	Oliver Neukum <ONeukum@...e.com>,
	Jiri Kosina <jkosina@...e.cz>, Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 85/88] HID: elo: kill not flush the work

From: Oliver Neukum <oneukum@...e.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit ed596a4a88bd161f868ccba078557ee7ede8a6ef upstream.

Flushing a work that reschedules itself is not a sensible operation. It needs
to be killed. Failure to do so leads to a kernel panic in the timer code.

Signed-off-by: Oliver Neukum <ONeukum@...e.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/hid/hid-elo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-elo.c b/drivers/hid/hid-elo.c
index 55e4920f967b..0cd5f767d861 100644
--- a/drivers/hid/hid-elo.c
+++ b/drivers/hid/hid-elo.c
@@ -259,7 +259,7 @@ static void elo_remove(struct hid_device *hdev)
 	struct elo_priv *priv = hid_get_drvdata(hdev);
 
 	hid_hw_stop(hdev);
-	flush_workqueue(wq);
+	cancel_delayed_work_sync(&priv->work);
 	kfree(priv);
 }
 
-- 
2.9.1