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%3Ba=su...
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 stable@vger.kernel.org know about it.
From shuahkh@osg.samsung.com Fri Feb 2 11:21:56 2018
From: Shuah Khan shuahkh@osg.samsung.com 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 shuahkh@osg.samsung.com, 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 shuahkh@osg.samsung.com
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 shuahkh@osg.samsung.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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