From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1424185AbcBQQKk (ORCPT ); Wed, 17 Feb 2016 11:10:40 -0500 Received: from mail-wm0-f53.google.com ([74.125.82.53]:36288 "EHLO mail-wm0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030211AbcBQQKf (ORCPT ); Wed, 17 Feb 2016 11:10:35 -0500 Date: Wed, 17 Feb 2016 17:10:24 +0100 From: Dave Penkler To: gregkh@linuxfoundation.org Cc: oneukum@suse.com, peter.chen@freescale.com, teuniz@gmail.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] usb: usbtmc: Fix disconnect/poll interaction Message-ID: <20160217161024.GA1610@slacky> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When the device is disconnected poll waiters were not being woken. Fixes issue in commit eb6b92ecc0f9412623ab1584ddd8389b371638d4 reported by Oliver Neukum Signed-off-by: Dave Penkler --- drivers/usb/class/usbtmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 419c72e..917a55c 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -1525,13 +1525,14 @@ static void usbtmc_disconnect(struct usb_interface *intf) dev_dbg(&intf->dev, "usbtmc_disconnect called\n"); data = usb_get_intfdata(intf); - usbtmc_free_int(data); usb_deregister_dev(intf, &usbtmc_class); sysfs_remove_group(&intf->dev.kobj, &capability_attr_grp); sysfs_remove_group(&intf->dev.kobj, &data_attr_grp); mutex_lock(&data->io_mutex); data->zombie = 1; + wake_up_all(&data->waitq); mutex_unlock(&data->io_mutex); + usbtmc_free_int(data); kref_put(&data->kref, usbtmc_delete); } -- 2.6.3