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authorHans de Goede <hdegoede@redhat.com>2012-03-02 21:27:09 +0100
committerGerd Hoffmann <kraxel@redhat.com>2012-03-07 12:28:02 +0100
commit2a5ff735dc1074171a0cbb1dc228d6d6e907f571 (patch)
tree33f19baa5b73f50d3c00c5b70f31618b82b1e132 /hw
parent0454b611bb129ada92d16cfb9bec5fd6e1df5ab0 (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>
Diffstat (limited to 'hw')
-rw-r--r--hw/usb-ehci.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c
index afc8ccf458..d41b80e6f9 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);