From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:40182 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751581AbbJQXch (ORCPT ); Sat, 17 Oct 2015 19:32:37 -0400 Subject: Patch "usb: Add device quirk for Logitech PTZ cameras" has been added to the 3.10-stable tree To: vpalatin@chromium.org, gregkh@linuxfoundation.org Cc: , From: Date: Sat, 17 Oct 2015 16:32:36 -0700 Message-ID: <14451247562428@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 usb: Add device quirk for Logitech PTZ cameras to the 3.10-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: usb-add-device-quirk-for-logitech-ptz-cameras.patch and it can be found in the queue-3.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 72194739f54607bbf8cfded159627a2015381557 Mon Sep 17 00:00:00 2001 From: Vincent Palatin Date: Thu, 1 Oct 2015 14:10:22 -0700 Subject: usb: Add device quirk for Logitech PTZ cameras From: Vincent Palatin commit 72194739f54607bbf8cfded159627a2015381557 upstream. Add a device quirk for the Logitech PTZ Pro Camera and its sibling the ConferenceCam CC3000e Camera. This fixes the failed camera enumeration on some boot, particularly on machines with fast CPU. Tested by connecting a Logitech PTZ Pro Camera to a machine with a Haswell Core i7-4600U CPU @ 2.10GHz, and doing thousands of reboot cycles while recording the kernel logs and taking camera picture after each boot. Before the patch, more than 7% of the boots show some enumeration transfer failures and in a few of them, the kernel is giving up before actually enumerating the webcam. After the patch, the enumeration has been correct on every reboot. Signed-off-by: Vincent Palatin Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/quirks.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -53,6 +53,13 @@ static const struct usb_device_id usb_qu { USB_DEVICE(0x046d, 0x082d), .driver_info = USB_QUIRK_DELAY_INIT }, { USB_DEVICE(0x046d, 0x0843), .driver_info = USB_QUIRK_DELAY_INIT }, + /* Logitech ConferenceCam CC3000e */ + { USB_DEVICE(0x046d, 0x0847), .driver_info = USB_QUIRK_DELAY_INIT }, + { USB_DEVICE(0x046d, 0x0848), .driver_info = USB_QUIRK_DELAY_INIT }, + + /* Logitech PTZ Pro Camera */ + { USB_DEVICE(0x046d, 0x0853), .driver_info = USB_QUIRK_DELAY_INIT }, + /* Logitech Quickcam Fusion */ { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME }, Patches currently in stable-queue which might be from vpalatin@chromium.org are queue-3.10/usb-add-device-quirk-for-logitech-ptz-cameras.patch