diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2012-09-03 11:35:58 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2012-09-11 07:42:59 +0200 |
| commit | eff6dce79bd7ad3c16d75c5e55b5a2a137ba6a60 (patch) | |
| tree | debe7c57070b02cbc85fabc345d2efb616dc372b | |
| parent | ef5b234477df80700b128f561f5877a0688a70c8 (diff) | |
| download | qemu-eff6dce79bd7ad3c16d75c5e55b5a2a137ba6a60.zip | |
ehci: Handle USB_RET_PROCERR in ehci_fill_queue
USB_RET_PROCERR can be triggered by the guest (by for example requesting more
then BUFFSIZE bytes), so don't assert on it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | hw/usb/hcd-ehci.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c index d87aca8331..2534394202 100644 --- a/hw/usb/hcd-ehci.c +++ b/hw/usb/hcd-ehci.c @@ -2076,7 +2076,7 @@ static int ehci_state_horizqh(EHCIQueue *q) return again; } -static void ehci_fill_queue(EHCIPacket *p) +static int ehci_fill_queue(EHCIPacket *p) { EHCIQueue *q = p->queue; EHCIqtd qtd = p->qtd; @@ -2100,9 +2100,13 @@ static void ehci_fill_queue(EHCIPacket *p) p->qtdaddr = qtdaddr; p->qtd = qtd; p->usb_status = ehci_execute(p, "queue"); + if (p->usb_status == USB_RET_PROCERR) { + break; + } assert(p->usb_status == USB_RET_ASYNC); p->async = EHCI_ASYNC_INFLIGHT; } + return p->usb_status; } static int ehci_state_execute(EHCIQueue *q) @@ -2144,8 +2148,7 @@ static int ehci_state_execute(EHCIQueue *q) trace_usb_ehci_packet_action(p->queue, p, "async"); p->async = EHCI_ASYNC_INFLIGHT; ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH); - again = 1; - ehci_fill_queue(p); + again = (ehci_fill_queue(p) == USB_RET_PROCERR) ? -1 : 1; goto out; } |