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xhci: Always use usb_hcd in URB instead of converting xhci_hcd. 

Make sure to call into the USB core's link, unlink, and giveback URB
functions with the usb_hcd pointer found by using urb->dev->bus.  This
will avoid confusion later, when the xHCI driver will deal with URBs from
two separate buses (the USB 3.0 roothub and the faked USB 2.0 roothub).

Assume xhci_urb_dequeue() will be called with the proper usb_hcd.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Sarah Sharp 2010-10-26 11:22:02 -07:00
parent aa1b13efb7
commit 214f76f7d9
2 changed files with 6 additions and 5 deletions
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9
drivers/usb/host/xhci-ring.c
View File

@ -594,13 +594,14 @@ static inline void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci,
static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci,
struct xhci_td *cur_td, int status, char *adjective)
{
struct usb_hcd *hcd = xhci_to_hcd(xhci);
struct usb_hcd *hcd;
struct urb *urb;
struct urb_priv *urb_priv;
urb = cur_td->urb;
urb_priv = urb->hcpriv;
urb_priv->td_cnt++;
hcd = bus_to_hcd(urb->dev->bus);
/* Only giveback urb when this is the last td in urb */
if (urb_priv->td_cnt == urb_priv->length) {
@ -1982,12 +1983,12 @@ static int handle_tx_event(struct xhci_hcd *xhci,
trb_comp_code != COMP_BABBLE))
xhci_urb_free_priv(xhci, urb_priv);
usb_hcd_unlink_urb_from_ep(xhci_to_hcd(xhci), urb);
usb_hcd_unlink_urb_from_ep(bus_to_hcd(urb->dev->bus), urb);
xhci_dbg(xhci, "Giveback URB %p, len = %d, "
"status = %d\n",
urb, urb->actual_length, status);
spin_unlock(&xhci->lock);
usb_hcd_giveback_urb(xhci_to_hcd(xhci), urb, status);
usb_hcd_giveback_urb(bus_to_hcd(urb->dev->bus), urb, status);
spin_lock(&xhci->lock);
}
@ -2323,7 +2324,7 @@ static int prepare_transfer(struct xhci_hcd *xhci,
INIT_LIST_HEAD(&td->cancelled_td_list);
if (td_index == 0) {
ret = usb_hcd_link_urb_to_ep(xhci_to_hcd(xhci), urb);
ret = usb_hcd_link_urb_to_ep(bus_to_hcd(urb->dev->bus), urb);
if (unlikely(ret)) {
xhci_urb_free_priv(xhci, urb_priv);
urb->hcpriv = NULL;

2
drivers/usb/host/xhci.c
View File

@ -1154,7 +1154,7 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
usb_hcd_unlink_urb_from_ep(hcd, urb);
spin_unlock_irqrestore(&xhci->lock, flags);
usb_hcd_giveback_urb(xhci_to_hcd(xhci), urb, -ESHUTDOWN);
usb_hcd_giveback_urb(hcd, urb, -ESHUTDOWN);
xhci_urb_free_priv(xhci, urb_priv);
return ret;
}