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Date: Fri, 17 Oct 2014 13:55:29 +0800 From: Hayes Wang <hayeswang@...ltek.com> To: <netdev@...r.kernel.org> CC: <nic_swsd@...ltek.com>, <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>, Hayes Wang <hayeswang@...ltek.com> Subject: [PATCH net] r8152: use cancel_delayed_work for runtime suspend It would cause dead lock for runtime suspend, when the workqueue is running and runtime suspend occurs before the workqueue wakes up the device. The rtl8152_suspend() waits the workqueue to finish because of calling cancel_delayed_work_sync(). The workqueue waits the suspend function to finish for waking up the device because of calling usb_autopm_get_interface(). Signed-off-by: Hayes Wang <hayeswang@...ltek.com> --- drivers/net/usb/r8152.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 864159e..7d4e55a 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -3200,12 +3200,13 @@ static int rtl8152_suspend(struct usb_interface *intf, pm_message_t message) if (netif_running(tp->netdev)) { clear_bit(WORK_ENABLE, &tp->flags); usb_kill_urb(tp->intr_urb); - cancel_delayed_work_sync(&tp->schedule); tasklet_disable(&tp->tl); if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) { + cancel_delayed_work(&tp->schedule); rtl_stop_rx(tp); rtl_runtime_suspend_enable(tp, true); } else { + cancel_delayed_work_sync(&tp->schedule); tp->rtl_ops.down(tp); } tasklet_enable(&tp->tl); -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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