Merge branch 'for-2.6.38' of git://linux-nfs.org/~bfields/linux

[mv-sheeva.git] / drivers / staging / usbip / vhci_hcd.c

diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c
index 3a22f65b66d08494d9378ee0734ffd3cbfef8947..a35fe61268de3e974f8ece7f2edb0bd1e28b0468 100644 (file)
--- a/drivers/staging/usbip/vhci_hcd.c
+++ b/drivers/staging/usbip/vhci_hcd.c
@@ -138,8 +138,6 @@ void rh_port_connect(int rhport, enum usb_device_speed speed)
         * the_controller->vdev[rhport].ud.status = VDEV_CONNECT;
         * spin_unlock(&the_controller->vdev[rhport].ud.lock); */
 
-       the_controller->pending_port = rhport;
-
        spin_unlock_irqrestore(&the_controller->lock, flags);
 
        usb_hcd_poll_rh_status(vhci_to_hcd(the_controller));
@@ -559,6 +557,7 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
        struct device *dev = &urb->dev->dev;
        int ret = 0;
        unsigned long flags;
+       struct vhci_device *vdev;
 
        usbip_dbg_vhci_hc("enter, usb_hcd %p urb %p mem_flags %d\n",
                    hcd, urb, mem_flags);
@@ -574,6 +573,18 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
                return urb->status;
        }
 
+       vdev = port_to_vdev(urb->dev->portnum-1);
+
+       /* refuse enqueue for dead connection */
+       spin_lock(&vdev->ud.lock);
+       if (vdev->ud.status == VDEV_ST_NULL || vdev->ud.status == VDEV_ST_ERROR) {
+               usbip_uerr("enqueue for inactive port %d\n", vdev->rhport);
+               spin_unlock(&vdev->ud.lock);
+               spin_unlock_irqrestore(&the_controller->lock, flags);
+               return -ENODEV;
+       }
+       spin_unlock(&vdev->ud.lock);
+
        ret = usb_hcd_link_urb_to_ep(hcd, urb);
        if (ret)
                goto no_need_unlink;
@@ -592,8 +603,6 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
                __u8 type = usb_pipetype(urb->pipe);
                struct usb_ctrlrequest *ctrlreq =
                                (struct usb_ctrlrequest *) urb->setup_packet;
-               struct vhci_device *vdev =
-                               port_to_vdev(the_controller->pending_port);
 
                if (type != PIPE_CONTROL || !ctrlreq) {
                        dev_err(dev, "invalid request to devnum 0\n");