From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:42390 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750814AbdKSLF4 (ORCPT ); Sun, 19 Nov 2017 06:05:56 -0500 Subject: Patch "Bluetooth: btusb: fix QCA Rome suspend/resume" has been added to the 4.4-stable tree To: leif.linux@gmail.com, gregkh@linuxfoundation.org, kai.heng.feng@canonical.com, marcel@holtmann.org Cc: , From: Date: Sun, 19 Nov 2017 12:05:37 +0100 Message-ID: <1511089537111210@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled Bluetooth: btusb: fix QCA Rome suspend/resume to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: bluetooth-btusb-fix-qca-rome-suspend-resume.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From fd865802c66bc451dc515ed89360f84376ce1a56 Mon Sep 17 00:00:00 2001 From: Leif Liddy Date: Sat, 8 Jul 2017 20:55:32 +0200 Subject: Bluetooth: btusb: fix QCA Rome suspend/resume From: Leif Liddy commit fd865802c66bc451dc515ed89360f84376ce1a56 upstream. There's been numerous reported instances where BTUSB_QCA_ROME bluetooth controllers stop functioning upon resume from suspend. These devices seem to be losing power during suspend. Patch will detect a status change on resume and perform a reset. Signed-off-by: Leif Liddy Signed-off-by: Marcel Holtmann Cc: Kai Heng Feng Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/btusb.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2969,6 +2969,12 @@ static int btusb_probe(struct usb_interf if (id->driver_info & BTUSB_QCA_ROME) { data->setup_on_usb = btusb_setup_qca; hdev->set_bdaddr = btusb_set_bdaddr_ath3012; + + /* QCA Rome devices lose their updated firmware over suspend, + * but the USB hub doesn't notice any status change. + * Explicitly request a device reset on resume. + */ + set_bit(BTUSB_RESET_RESUME, &data->flags); } #ifdef CONFIG_BT_HCIBTUSB_RTL Patches currently in stable-queue which might be from leif.linux@gmail.com are queue-4.4/bluetooth-btusb-fix-qca-rome-suspend-resume.patch