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xhci: add xhci_port_have_device 

Factor out the code which checks whenever a usb device is attached
to the port in question.  No functional change.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-10-26 10:15:47 +02:00
parent f321402785
commit 6a32f80f05
1 changed files with 12 additions and 2 deletions
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14
hw/usb/hcd-xhci.c
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@ -2337,11 +2337,21 @@ static void xhci_process_commands(XHCIState *xhci)
}
}
static bool xhci_port_have_device(XHCIPort *port)
{
if (!port->uport->dev || !port->uport->dev->attached) {
return false; /* no device present */
}
if (!((1 << port->uport->dev->speed) & port->speedmask)) {
return false; /* speed mismatch */
}
return true;
}
static void xhci_port_update(XHCIPort *port, int is_detach)
{
port->portsc = PORTSC_PP;
if (port->uport->dev && port->uport->dev->attached && !is_detach &&
(1 << port->uport->dev->speed) & port->speedmask) {
if (!is_detach && xhci_port_have_device(port)) {
port->portsc |= PORTSC_CCS;
switch (port->uport->dev->speed) {
case USB_SPEED_LOW: