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-rw-r--r--hw/usb-xhci.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/hw/usb-xhci.c b/hw/usb-xhci.c
index 7028338a28..aa236c9a3f 100644
--- a/hw/usb-xhci.c
+++ b/hw/usb-xhci.c
@@ -1385,6 +1385,14 @@ static int xhci_complete_packet(XHCITransfer *xfer, int ret)
return 0;
}
+static USBDevice *xhci_find_device(XHCIPort *port, uint8_t addr)
+{
+ if (!(port->portsc & PORTSC_PED)) {
+ return NULL;
+ }
+ return usb_find_device(&port->port, addr);
+}
+
static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
{
XHCITRB *trb_setup, *trb_status;
@@ -1444,7 +1452,7 @@ static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
xfer->data_length = wLength;
port = &xhci->ports[xhci->slots[xfer->slotid-1].port-1];
- dev = port->port.dev;
+ dev = xhci_find_device(port, xhci->slots[xfer->slotid-1].devaddr);
if (!dev) {
fprintf(stderr, "xhci: slot %d port %d has no device\n", xfer->slotid,
xhci->slots[xfer->slotid-1].port);
@@ -1502,7 +1510,7 @@ static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx
}
port = &xhci->ports[xhci->slots[xfer->slotid-1].port-1];
- dev = port->port.dev;
+ dev = xhci_find_device(port, xhci->slots[xfer->slotid-1].devaddr);
if (!dev) {
fprintf(stderr, "xhci: slot %d port %d has no device\n", xfer->slotid,
xhci->slots[xfer->slotid-1].port);