diff options
Diffstat (limited to 'payloads/libpayload/drivers/usb/xhci_events.c')
| -rw-r--r-- | payloads/libpayload/drivers/usb/xhci_events.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/payloads/libpayload/drivers/usb/xhci_events.c b/payloads/libpayload/drivers/usb/xhci_events.c index b04ecda267..ab90c59fe3 100644 --- a/payloads/libpayload/drivers/usb/xhci_events.c +++ b/payloads/libpayload/drivers/usb/xhci_events.c @@ -308,7 +308,7 @@ xhci_wait_for_command_done(xhci_t *const xhci, return cc; } -/* returns cc of transfer for given slot/endpoint pair */ +/* returns amount of bytes transferred on success, negative CC on error */ int xhci_wait_for_transfer(xhci_t *const xhci, const int slot_id, const int ep_id) { @@ -319,7 +319,9 @@ xhci_wait_for_transfer(xhci_t *const xhci, const int slot_id, const int ep_id) while (xhci_wait_for_event_type(xhci, TRB_EV_TRANSFER, &timeout_us)) { if (TRB_GET(ID, xhci->er.cur) == slot_id && TRB_GET(EP, xhci->er.cur) == ep_id) { - cc = TRB_GET(CC, xhci->er.cur); + cc = -TRB_GET(CC, xhci->er.cur); + if (cc == -CC_SUCCESS || cc == -CC_SHORT_PACKET) + cc = TRB_GET(EVTL, xhci->er.cur); xhci_advance_event_ring(xhci); break; } |