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* grub-core/bus/usb/ehci.c: Fix handling of newborn transfers. 

Avoid confusing them with already completed transfers.
This commit is contained in:
Aleš Nesrsta 2013-12-18 18:59:49 +01:00 committed by Vladimir Serbinenko
parent 72c9a50773
commit e3ef0d30cf
2 changed files with 13 additions and 2 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2013-12-18 Aleš Nesrsta <starous@volny.cz>
* grub-core/bus/usb/ehci.c: Fix handling of newborn transfers.
Avoid confusing them with already completed transfers.
2013-12-18 Vladimir Serbinenko <phcoder@gmail.com>
Remove xen VFB.

9
grub-core/bus/usb/ehci.c
View File

@ -1513,7 +1513,7 @@ grub_ehci_check_transfer (grub_usb_controller_t dev,
struct grub_ehci *e = dev->data;
struct grub_ehci_transfer_controller_data *cdata =
transfer->controller_data;
grub_uint32_t token;
grub_uint32_t token, token_ftd;
grub_dprintf ("ehci",
"check_transfer: EHCI STATUS=%08x, cdata=%p, qh=%p\n",
@ -1541,13 +1541,18 @@ grub_ehci_check_transfer (grub_usb_controller_t dev,
return grub_ehci_parse_notrun (dev, transfer, actual);
token = grub_le_to_cpu32 (cdata->qh_virt->td_overlay.token);
/* If the transfer consist from only one TD, we should check */
/* if the TD was really executed and deactivated - to prevent */
/* false detection of transfer finish. */
token_ftd = grub_le_to_cpu32 (cdata->td_first_virt->token);
/* Detect QH halted */
if ((token & GRUB_EHCI_STATUS_HALTED) != 0)
return grub_ehci_parse_halt (dev, transfer, actual);
/* Detect QH not active - QH is not active and no next TD */
if ((token & GRUB_EHCI_STATUS_ACTIVE) == 0)
if (token && ((token & GRUB_EHCI_STATUS_ACTIVE) == 0)
&& ((token_ftd & GRUB_EHCI_STATUS_ACTIVE) == 0))
{
/* It could be finish at all or short packet condition */
if ((grub_le_to_cpu32 (cdata->qh_virt->td_overlay.next_td)