hw: usb: hcd-ohci: check for processed TD before retire
commit1be90ebecc95b09a2ee5af3f60c412b45a766c4f
authorPrasad J Pandit <pjp@fedoraproject.org>
Tue, 15 Sep 2020 18:22:59 +0000 (15 23:52 +0530)
committerGerd Hoffmann <kraxel@redhat.com>
Mon, 21 Sep 2020 07:44:54 +0000 (21 09:44 +0200)
tree43161ab3ee0d96c5dc1e695ab6a1bc83078a5a36
parent1328fe0c32d5474604105b8105310e944976b058
hw: usb: hcd-ohci: check for processed TD before retire

While servicing OHCI transfer descriptors(TD), ohci_service_iso_td
retires a TD if it has passed its time frame. It does not check if
the TD was already processed once and holds an error code in TD_CC.
It may happen if the TD list has a loop. Add check to avoid an
infinite loop condition.

Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-id: 20200915182259.68522-3-ppandit@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
hw/usb/hcd-ohci.c