diff options
-rw-r--r-- | drivers/staging/usbip/vhci_rx.c | 44 |
1 files changed, 13 insertions, 31 deletions
diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/staging/usbip/vhci_rx.c index 2ffc96a4c0d4..61b9fc702b54 100644 --- a/drivers/staging/usbip/vhci_rx.c +++ b/drivers/staging/usbip/vhci_rx.c @@ -23,10 +23,8 @@ #include "usbip_common.h" #include "vhci.h" - /* 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 urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum) { struct vhci_priv *priv, *tmp; struct urb *urb = NULL; @@ -38,12 +36,12 @@ struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, status = urb->status; usbip_dbg_vhci_rx("find urb %p vurb %p seqnum %u\n", - urb, priv, seqnum); + urb, priv, seqnum); /* TODO: fix logic here to improve indent situtation */ if (status != -EINPROGRESS) { if (status == -ENOENT || - status == -ECONNRESET) + status == -ECONNRESET) dev_info(&urb->dev->dev, "urb %p was unlinked " "%ssynchronuously.\n", urb, @@ -66,36 +64,31 @@ struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, } static void vhci_recv_ret_submit(struct vhci_device *vdev, - struct usbip_header *pdu) + struct usbip_header *pdu) { 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", - pdu->base.seqnum); + pdu->base.seqnum); usbip_uinfo("max seqnum %d\n", - atomic_read(&the_controller->seqnum)); + atomic_read(&the_controller->seqnum)); usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); return; } - /* unpack the pdu to a urb */ usbip_pack_pdu(pdu, urb, USBIP_RET_SUBMIT, 0); - /* recv transfer buffer */ if (usbip_recv_xbuff(ud, urb) < 0) return; - /* recv iso_packet_descriptor */ if (usbip_recv_iso(ud, urb) < 0) return; @@ -107,7 +100,6 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev, if (usbip_dbg_flag_vhci_rx) usbip_dump_urb(urb); - usbip_dbg_vhci_rx("now giveback urb %p\n", urb); spin_lock(&the_controller->lock); @@ -116,15 +108,13 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev, usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, urb->status); - usbip_dbg_vhci_rx("Leave\n"); return; } - static struct vhci_unlink *dequeue_pending_unlink(struct vhci_device *vdev, - struct usbip_header *pdu) + struct usbip_header *pdu) { struct vhci_unlink *unlink, *tmp; @@ -134,7 +124,7 @@ static struct vhci_unlink *dequeue_pending_unlink(struct vhci_device *vdev, usbip_uinfo("unlink->seqnum %lu\n", unlink->seqnum); if (unlink->seqnum == pdu->base.seqnum) { usbip_dbg_vhci_rx("found pending unlink, %lu\n", - unlink->seqnum); + unlink->seqnum); list_del(&unlink->list); spin_unlock(&vdev->priv_lock); @@ -147,9 +137,8 @@ static struct vhci_unlink *dequeue_pending_unlink(struct vhci_device *vdev, return NULL; } - static void vhci_recv_ret_unlink(struct vhci_device *vdev, - struct usbip_header *pdu) + struct usbip_header *pdu) { struct vhci_unlink *unlink; struct urb *urb; @@ -159,14 +148,12 @@ static void vhci_recv_ret_unlink(struct vhci_device *vdev, unlink = dequeue_pending_unlink(vdev, pdu); if (!unlink) { usbip_uinfo("cannot find the pending unlink %u\n", - pdu->base.seqnum); + pdu->base.seqnum); return; } spin_lock(&vdev->priv_lock); - urb = pickup_urb_and_free_priv(vdev, unlink->unlink_seqnum); - spin_unlock(&vdev->priv_lock); if (!urb) { @@ -176,7 +163,7 @@ static void vhci_recv_ret_unlink(struct vhci_device *vdev, * back the URB. */ usbip_uinfo("the urb (seqnum %d) was already given backed\n", - pdu->base.seqnum); + pdu->base.seqnum); } else { usbip_dbg_vhci_rx("now giveback urb %p\n", urb); @@ -189,7 +176,7 @@ static void vhci_recv_ret_unlink(struct vhci_device *vdev, spin_unlock(&the_controller->lock); usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, - urb->status); + urb->status); } kfree(unlink); @@ -202,9 +189,7 @@ static int vhci_priv_tx_empty(struct vhci_device *vdev) int empty = 0; spin_lock(&vdev->priv_lock); - empty = list_empty(&vdev->priv_rx); - spin_unlock(&vdev->priv_lock); return empty; @@ -217,7 +202,6 @@ static void vhci_rx_pdu(struct usbip_device *ud) struct usbip_header pdu; struct vhci_device *vdev = container_of(ud, struct vhci_device, ud); - usbip_dbg_vhci_rx("Enter\n"); memset(&pdu, 0, sizeof(pdu)); @@ -245,7 +229,7 @@ static void vhci_rx_pdu(struct usbip_device *ud) } if (ret != sizeof(pdu)) { usbip_uerr("received pdu size is %d, should be %d\n", - ret, (unsigned int)sizeof(pdu)); + ret, (unsigned int)sizeof(pdu)); usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); return; } @@ -270,14 +254,12 @@ static void vhci_rx_pdu(struct usbip_device *ud) } } - /*-------------------------------------------------------------------------*/ int vhci_rx_loop(void *data) { struct usbip_device *ud = data; - while (!kthread_should_stop()) { if (usbip_event_happened(ud)) break; |