diff options
| -rw-r--r-- | payloads/libpayload/drivers/usb/uhci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/usb/uhci.c b/payloads/libpayload/drivers/usb/uhci.c index bfa53f6049..386392b53f 100644 --- a/payloads/libpayload/drivers/usb/uhci.c +++ b/payloads/libpayload/drivers/usb/uhci.c @@ -590,6 +590,11 @@ uhci_poll_intr_queue (void *q_) q->lastread = (q->lastread + 1) % q->total; return &q->data[current*q->reqsize]; } + /* reset queue if we fully processed it after underrun */ + else if (q->qh->elementlinkptr & FLISTP_TERMINATE) { + usb_debug("resetting underrun uhci interrupt queue.\n"); + q->qh->elementlinkptr = virt_to_phys(q->tds + q->lastread); + } return NULL; } |