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usb-uhci: fix irq handling on error. 

Spec on UHCI_STS_USBERR: "If the TD on which the error interrupt
occurred also had its IOC bit set, both this bit and Bit 0 are set."

Make UHCI emulation do that.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2011-07-08 17:28:11 +02:00
parent e7e73892a6
commit 0070f095d9
1 changed files with 6 additions and 0 deletions
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6
hw/usb-uhci.c
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@ -730,6 +730,9 @@ out:
td->ctrl |= TD_CTRL_STALL;
td->ctrl &= ~TD_CTRL_ACTIVE;
s->status |= UHCI_STS_USBERR;
if (td->ctrl & TD_CTRL_IOC) {
*int_mask |= 0x01;
}
uhci_update_irq(s);
return 1;
@ -737,6 +740,9 @@ out:
td->ctrl |= TD_CTRL_BABBLE | TD_CTRL_STALL;
td->ctrl &= ~TD_CTRL_ACTIVE;
s->status |= UHCI_STS_USBERR;
if (td->ctrl & TD_CTRL_IOC) {
*int_mask |= 0x01;
}
uhci_update_irq(s);
/* frame interrupted */
return -1;