if (unlikely(urb->unlinked)) {
COUNT(ehci->stats.unlink);
} else {
- if (likely(status == -EINPROGRESS))
+ /* report non-error and short read status as zero */
+ if (status == -EINPROGRESS || status == -EREMOTEIO)
status = 0;
COUNT(ehci->stats.complete);
}
#ifdef EHCI_URB_TRACE
ehci_dbg (ehci,
"%s %s urb %p ep%d%s status %d len %d/%d\n",
- __FUNCTION__, urb->dev->devpath, urb,
+ __func__, urb->dev->devpath, urb,
usb_pipeendpoint (urb->pipe),
usb_pipein (urb->pipe) ? "in" : "out",
status,
int last_status = -EINPROGRESS;
int stopped;
unsigned count = 0;
- int do_status = 0;
u8 state;
- u32 halt = HALT_BIT(ehci);
+ __le32 halt = HALT_BIT(ehci);
if (unlikely (list_empty (&qh->qtd_list)))
return count;
struct ehci_qtd *qtd;
struct urb *urb;
u32 token = 0;
- int qtd_status;
qtd = list_entry (entry, struct ehci_qtd, qtd_list);
urb = qtd->urb;
else if (last_status == -EINPROGRESS && !urb->unlinked)
continue;
- /* issue status after short control reads */
- if (unlikely (do_status != 0)
- && QTD_PID (token) == 0 /* OUT */) {
- do_status = 0;
- continue;
- }
-
/* qh unlinked; token in overlay may be most current */
if (state == QH_STATE_IDLE
&& cpu_to_hc32(ehci, qtd->qtd_dma)
}
}
- /* remove it from the queue */
- qtd_status = qtd_copy_status(ehci, urb, qtd->length, token);
- if (unlikely(qtd_status == -EREMOTEIO)) {
- do_status = (!urb->unlinked &&
- usb_pipecontrol(urb->pipe));
- qtd_status = 0;
+ /* unless we already know the urb's status, collect qtd status
+ * and update count of bytes transferred. in common short read
+ * cases with only one data qtd (including control transfers),
+ * queue processing won't halt. but with two or more qtds (for
+ * example, with a 32 KB transfer), when the first qtd gets a
+ * short read the second must be removed by hand.
+ */
+ if (last_status == -EINPROGRESS) {
+ last_status = qtd_copy_status(ehci, urb,
+ qtd->length, token);
+ if (last_status == -EREMOTEIO
+ && (qtd->hw_alt_next
+ & EHCI_LIST_END(ehci)))
+ last_status = -EINPROGRESS;
}
- if (likely(last_status == -EINPROGRESS))
- last_status = qtd_status;
/* if we're removing something not at the queue head,
* patch the hardware queue pointer.
)
{
struct ehci_qh *qh = NULL;
- u32 qh_addr_mask = cpu_to_hc32(ehci, 0x7f);
+ __hc32 qh_addr_mask = cpu_to_hc32(ehci, 0x7f);
qh = (struct ehci_qh *) *ptr;
if (unlikely (qh == NULL)) {
#ifdef EHCI_URB_TRACE
ehci_dbg (ehci,
"%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
- __FUNCTION__, urb->dev->devpath, urb,
+ __func__, urb->dev->devpath, urb,
epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
urb->transfer_buffer_length,
qtd, urb->ep->hcpriv);
struct ehci_qh *qh;
enum ehci_timer_action action = TIMER_IO_WATCHDOG;
- if (!++(ehci->stamp))
- ehci->stamp++;
+ ehci->stamp = ehci_readl(ehci, &ehci->regs->frame_index);
timer_action_done (ehci, TIMER_ASYNC_SHRINK);
rescan:
qh = ehci->async->qh_next.qh;
}
}
- /* unlink idle entries, reducing HC PCI usage as well
+ /* unlink idle entries, reducing DMA usage as well
* as HCD schedule-scanning costs. delay for any qh
* we just scanned, there's a not-unusual case that it
* doesn't stay idle for long.
* (plus, avoids some kind of re-activation race.)
*/
- if (list_empty (&qh->qtd_list)) {
- if (qh->stamp == ehci->stamp)
+ if (list_empty(&qh->qtd_list)
+ && qh->qh_state == QH_STATE_LINKED) {
+ if (!ehci->reclaim
+ && ((ehci->stamp - qh->stamp) & 0x1fff)
+ >= (EHCI_SHRINK_FRAMES * 8))
+ start_unlink_async(ehci, qh);
+ else
action = TIMER_ASYNC_SHRINK;
- else if (!ehci->reclaim
- && qh->qh_state == QH_STATE_LINKED)
- start_unlink_async (ehci, qh);
}
qh = qh->qh_next.qh;