[patch]fix possible deadlock in usbhid_close()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This patch switches usbhid_close() from flush_scheduled_work() to canceling
the outstanding work. This fixes a possible deadlock due to work taking
the mutex usbhid_close() holds. Lockdep reported the problem.

Signed-off-by: Oliver Neukum <oliver@xxxxxxxxxx>

--

--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -662,8 +662,8 @@ void usbhid_close(struct hid_device *hid)
 	spin_lock_irq(&usbhid->lock);
 	if (!--hid->open) {
 		spin_unlock_irq(&usbhid->lock);
+		hid_cancel_delayed_stuff(usbhid);
 		usb_kill_urb(usbhid->urbin);
-		flush_scheduled_work();
 		usbhid->intf->needs_remote_wakeup = 0;
 	} else {
 		spin_unlock_irq(&usbhid->lock);
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux