haraldwolff/qemu-patch-raspberry4
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usb-ehci: Any packet completion except for NAK should set the interrupt

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As clearly stated in the 2.3.2 of the EHCI spec, any time USBERRINT get
sets then if the td has its IOC bit set USBINT should be set as well.

This means that for any status except for USB_RET_NAK we should set
USBINT if the IOC bit is set.

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 2012-03-02 21:27:14 +01:00 committed by Gerd Hoffmann
parent e850c2b453
commit 2763cbc751
1 changed files with 1 additions and 1 deletions
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2
hw/usb-ehci.c
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@ -1360,7 +1360,7 @@ err:
q->qh.token ^= QTD_TOKEN_DTOGGLE;
q->qh.token &= ~QTD_TOKEN_ACTIVE;
if ((q->usb_status >= 0) && (q->qh.token & QTD_TOKEN_IOC)) {
if ((q->usb_status != USB_RET_NAK) && (q->qh.token & QTD_TOKEN_IOC)) {
ehci_record_interrupt(q->ehci, USBSTS_INT);
}
}