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ehci: simplify ehci_state_executing

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ehci_state_executing does not need to check for p->usb_status == USB_RET_ASYNC
or USB_RET_PROCERR, since ehci_execute_complete already does a similar check
and will trigger an assert if either value is encountered.

USB_RET_ASYNC should never be the packet status when execute_complete runs
for obvious reasons, and USB_RET_PROCERR is only used by ehci_state_execute /
ehci_execute not by ehci_state_executing / ehci_execute_complete.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-08-17 11:39:17 +02:00 committed by Gerd Hoffmann
parent 53dd6f7032
commit 574ef17191
1 changed files with 1 additions and 12 deletions
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13
hw/usb/hcd-ehci.c
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@ -2084,19 +2084,11 @@ out:
static int ehci_state_executing(EHCIQueue *q)
{
EHCIPacket *p = QTAILQ_FIRST(&q->packets);
int again = 0;
assert(p != NULL);
assert(p->qtdaddr == q->qtdaddr);
ehci_execute_complete(q);
if (p->usb_status == USB_RET_ASYNC) {
goto out;
}
if (p->usb_status == USB_RET_PROCERR) {
again = -1;
goto out;
}
// 4.10.3
if (!q->async) {
@ -2114,11 +2106,8 @@ static int ehci_state_executing(EHCIQueue *q)
ehci_set_state(q->ehci, q->async, EST_WRITEBACK);
}
again = 1;
out:
ehci_flush_qh(q);
return again;
return 1;
}