usbip: fix usbip attach to find a port that matches the requested speed
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> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -329,9 +329,17 @@ err:
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int usbip_vhci_get_free_port(uint32_t speed)
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{
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for (int i = 0; i < vhci_driver->nports; i++) {
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if (speed == USB_SPEED_SUPER &&
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vhci_driver->idev[i].hub != HUB_SPEED_SUPER)
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continue;
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switch (speed) {
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case USB_SPEED_SUPER:
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if (vhci_driver->idev[i].hub != HUB_SPEED_SUPER)
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continue;
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break;
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default:
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if (vhci_driver->idev[i].hub != HUB_SPEED_HIGH)
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continue;
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break;
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}
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if (vhci_driver->idev[i].status == VDEV_ST_NULL)
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return vhci_driver->idev[i].port;
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