From fa9be5f009e8cfc695a2cd71617fc620ab5c1c18 Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Mon, 23 Dec 2013 14:15:13 -0800 Subject: [PATCH] NFC: NCI: Cancel cmd_timer in nci_close_device() nci_close_device() sends nci reset command to the device. If there is no response for this command, nci request timeout occurs first and then cmd timeout happens. Because command timer has started after sending the command. We are immediately flushing command workqueue after nci timeout. Later we will try to schedule cmd_work in command timer which leads to a crash. Cancel cmd_timer before flushing the workqueue to fix the problem. Signed-off-by: Amitkumar Karwar Signed-off-by: Bing Zhao Signed-off-by: Samuel Ortiz --- net/nfc/nci/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c index f0e955e3a385..0a2ee83c3bd3 100644 --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -361,6 +361,8 @@ static int nci_close_device(struct nci_dev *ndev) msecs_to_jiffies(NCI_RESET_TIMEOUT)); clear_bit(NCI_INIT, &ndev->flags); + del_timer_sync(&ndev->cmd_timer); + /* Flush cmd wq */ flush_workqueue(ndev->cmd_wq); -- 2.39.5