diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2012-03-02 21:27:09 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2012-03-07 12:28:02 +0100 |
| commit | 2a5ff735dc1074171a0cbb1dc228d6d6e907f571 (patch) | |
| tree | 33f19baa5b73f50d3c00c5b70f31618b82b1e132 | |
| parent | 0454b611bb129ada92d16cfb9bec5fd6e1df5ab0 (diff) | |
usb-ehci: Never follow table entries with the T-bit set
Before this patch the T-bit was not checked in 2 places, while it should be.
Once we properly check the T-bit everywhere we no longer need the weird
entry < 0x1000 and entry > 0x1000 checks, so this patch removes them.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | hw/usb-ehci.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c index afc8ccf45..d41b80e6f 100644 --- a/hw/usb-ehci.c +++ b/hw/usb-ehci.c @@ -1568,8 +1568,7 @@ static int ehci_state_fetchentry(EHCIState *ehci, int async) int again = 0; uint32_t entry = ehci_get_fetch_addr(ehci, async); - if (entry < 0x1000) { - DPRINTF("fetchentry: entry invalid (0x%08x)\n", entry); + if (NLPTR_TBIT(entry)) { ehci_set_state(ehci, async, EST_ACTIVE); goto out; } @@ -1677,7 +1676,8 @@ static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async) if (q->qh.token & QTD_TOKEN_HALT) { ehci_set_state(ehci, async, EST_HORIZONTALQH); - } else if ((q->qh.token & QTD_TOKEN_ACTIVE) && (q->qh.current_qtd > 0x1000)) { + } else if ((q->qh.token & QTD_TOKEN_ACTIVE) && + (NLPTR_TBIT(q->qh.current_qtd) == 0)) { q->qtdaddr = q->qh.current_qtd; ehci_set_state(ehci, async, EST_FETCHQTD); @@ -1756,7 +1756,6 @@ static int ehci_state_advqueue(EHCIQueue *q, int async) * want data and alt-next qTD is valid */ if (((q->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) && - (q->qh.altnext_qtd > 0x1000) && (NLPTR_TBIT(q->qh.altnext_qtd) == 0)) { q->qtdaddr = q->qh.altnext_qtd; ehci_set_state(q->ehci, async, EST_FETCHQTD); @@ -1764,8 +1763,7 @@ static int ehci_state_advqueue(EHCIQueue *q, int async) /* * next qTD is valid */ - } else if ((q->qh.next_qtd > 0x1000) && - (NLPTR_TBIT(q->qh.next_qtd) == 0)) { + } else if (NLPTR_TBIT(q->qh.next_qtd) == 0) { q->qtdaddr = q->qh.next_qtd; ehci_set_state(q->ehci, async, EST_FETCHQTD); |