From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:41488 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751611AbeBBKi6 (ORCPT ); Fri, 2 Feb 2018 05:38:58 -0500 Subject: Patch "usbip: vhci_hcd: clear just the USB_PORT_STAT_POWER bit" has been added to the 4.9-stable tree To: shuahkh@osg.samsung.com, gregkh@linuxfoundation.org Cc: , From: Date: Fri, 02 Feb 2018 11:38:38 +0100 In-Reply-To: <20180126185435.15577-1-shuahkh@osg.samsung.com> Message-ID: <151756791828105@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 usbip: vhci_hcd: clear just the USB_PORT_STAT_POWER bit to the 4.9-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: usbip-vhci_hcd-clear-just-the-usb_port_stat_power-bit.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From shuahkh@osg.samsung.com Fri Feb 2 11:21:56 2018 From: Shuah Khan Date: Fri, 26 Jan 2018 11:54:35 -0700 Subject: usbip: vhci_hcd: clear just the USB_PORT_STAT_POWER bit To: valentina.manea.m@gmail.com, shuah@kernel.org, gregkh@linuxfoundation.org Cc: Shuah Khan , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Message-ID: <20180126185435.15577-1-shuahkh@osg.samsung.com> From: Shuah Khan Upstream commit 1c9de5bf4286 ("usbip: vhci-hcd: Add USB3 SuperSpeed support") vhci_hcd clears all the bits port_status bits instead of clearing just the USB_PORT_STAT_POWER bit when it handles ClearPortFeature: USB_PORT_FEAT_POWER. This causes vhci_hcd attach to fail in a bad state, leaving device unusable by the client. The device is still attached and however client can't use it. The problem was fixed as part of larger change to add USB3 Super Speed support. This patch backports just the change to clear the USB_PORT_STAT_POWER. Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/vhci_hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -300,7 +300,7 @@ static int vhci_hub_control(struct usb_h case USB_PORT_FEAT_POWER: usbip_dbg_vhci_rh( " ClearPortFeature: USB_PORT_FEAT_POWER\n"); - dum->port_status[rhport] = 0; + dum->port_status[rhport] &= ~USB_PORT_STAT_POWER; dum->resuming = 0; break; case USB_PORT_FEAT_C_RESET: Patches currently in stable-queue which might be from shuahkh@osg.samsung.com are queue-4.9/usbip-list-don-t-list-devices-attached-to-vhci_hcd.patch queue-4.9/usbip-prevent-bind-loops-on-devices-attached-to-vhci_hcd.patch queue-4.9/cpupowerutils-bench-fix-cpu-online-check.patch queue-4.9/usbip-vhci_hcd-clear-just-the-usb_port_stat_power-bit.patch queue-4.9/cpupower-fix-cpupower-working-when-cpu0-is-offline.patch