This is a note to let you know that I've just added the patch titled

usbip: fix usbip attach to find a port that matches the requested speed

to the 4.14-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-fix-usbip-attach-to-find-a-port-that-matches-the-requested-speed.patch and it can be found in the queue-4.14 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 1ac7c8a78be85f84b019d3d2742d1a9f07255cc5 Mon Sep 17 00:00:00 2001

From: Shuah Khan shuahkh@osg.samsung.com Date: Wed, 29 Nov 2017 15:24:22 -0700 Subject: usbip: fix usbip attach to find a port that matches the requested speed

From: Shuah Khan shuahkh@osg.samsung.com

commit 1ac7c8a78be85f84b019d3d2742d1a9f07255cc5 upstream.

usbip attach fails to find a free port when the device on the first port is a USB_SPEED_SUPER device and non-super speed device is being attached. It keeps checking the first port and returns without a match getting stuck in a loop.

Fix it check to find the first port with matching speed.

Reported-by: Juan Zea juan.zea@qindel.com Signed-off-by: Shuah Khan shuahkh@osg.samsung.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- tools/usb/usbip/libsrc/vhci_driver.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)

--- a/tools/usb/usbip/libsrc/vhci_driver.c +++ b/tools/usb/usbip/libsrc/vhci_driver.c @@ -329,9 +329,17 @@ err: int usbip_vhci_get_free_port(uint32_t speed) { for (int i = 0; i < vhci_driver->nports; i++) { - if (speed == USB_SPEED_SUPER && - vhci_driver->idev[i].hub != HUB_SPEED_SUPER) - continue; + + switch (speed) { + case USB_SPEED_SUPER: + if (vhci_driver->idev[i].hub != HUB_SPEED_SUPER) + continue; + break; + default: + if (vhci_driver->idev[i].hub != HUB_SPEED_HIGH) + continue; + break; + }

if (vhci_driver->idev[i].status == VDEV_ST_NULL) return vhci_driver->idev[i].port;

Patches currently in stable-queue which might be from shuahkh@osg.samsung.com are

queue-4.14/usbip-fix-usbip-attach-to-find-a-port-that-matches-the-requested-speed.patch queue-4.14/usbip-fix-usb-device-hang-due-to-wrong-enabling-of-scatter-gather.patch