diff options
Diffstat (limited to 'drivers/staging/usbip/vhci_rx.c')
| -rw-r--r-- | drivers/staging/usbip/vhci_rx.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/staging/usbip/vhci_rx.c index 7636d86c2388..2d989c487f61 100644 --- a/drivers/staging/usbip/vhci_rx.c +++ b/drivers/staging/usbip/vhci_rx.c @@ -21,16 +21,14 @@ #include "vhci.h" -/* get URB from transmitted urb queue */ -static struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, +/* get URB from transmitted urb queue. caller must hold vdev->priv_lock */ +struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum) { struct vhci_priv *priv, *tmp; struct urb *urb = NULL; int status; - spin_lock(&vdev->priv_lock); - list_for_each_entry_safe(priv, tmp, &vdev->priv_rx, list) { if (priv->seqnum == seqnum) { urb = priv->urb; @@ -61,8 +59,6 @@ static struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, } } - spin_unlock(&vdev->priv_lock); - return urb; } @@ -72,9 +68,11 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev, struct usbip_device *ud = &vdev->ud; struct urb *urb; + spin_lock(&vdev->priv_lock); urb = pickup_urb_and_free_priv(vdev, pdu->base.seqnum); + spin_unlock(&vdev->priv_lock); if (!urb) { usbip_uerr("cannot find a urb of seqnum %u\n", @@ -159,7 +157,12 @@ static void vhci_recv_ret_unlink(struct vhci_device *vdev, return; } + spin_lock(&vdev->priv_lock); + urb = pickup_urb_and_free_priv(vdev, unlink->unlink_seqnum); + + spin_unlock(&vdev->priv_lock); + if (!urb) { /* * I get the result of a unlink request. But, it seems that I |